:root {
  --ink: #073f49;
  --orange: #ed702f;
  --paper: #fffaf0;
  --muted: #557078;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Microsoft YaHei","PingFang SC",sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

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

img {
  max-width: 100%;
  display: block;
}

header {
  height: 90px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px max(5vw,20px);
  background: rgba(255,250,240,.96);
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid #073f4910;
}

.brand {
  width: 215px;
}

.brand img {
  width: 100%;
  height: 62px;
  object-fit: contain;
}

nav {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14px;
  font-weight: 700;
}

.small-button {
  border: 1px solid var(--ink);
  padding: 9px 20px;
  border-radius: 40px;
}

.wrap {
  max-width: 1180px;
  margin: auto;
  padding-left: 28px;
  padding-right: 28px;
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 42px;
  padding-top: 35px;
  padding-bottom: 65px;
}

.eyebrow {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--orange);
}

h1 {
  font-size: clamp(40px,4.7vw,64px);
  line-height: 1.25;
  letter-spacing: -.035em;
  margin: 22px 0;
}

h1 span {
  color: var(--orange);
}

.lead {
  font-size: 18px;
  color: var(--muted);
}

.price {
  display: flex;
  gap: 23px;
  align-items: center;
  margin: 26px 0;
}

.price strong {
  font-size: 58px;
  line-height: 1.1;
  color: var(--orange);
}

.price small {
  font-size: 19px;
  font-weight: 500;
  margin-left: 5px;
}

.price i {
  width: 1px;
  height: 38px;
  background: #c8d1cc;
}

.price b {
  font-size: 25px;
}

.actions {
  display: flex;
  align-items: center;
  gap: 24px;
}

.button {
  background: var(--ink);
  color: white;
  padding: 15px 24px;
  border-radius: 40px;
  font-weight: 700;
  display: inline-flex;
  gap: 25px;
}

.button:hover {
  background: #12535c;
}

.text-link {
  font-size: 14px;
}

.note {
  font-size: 12px;
  color: var(--muted);
  margin-top: 17px;
}

figure {
  margin: 0;
  position: relative;
}

figure>img {
  width: 100%;
  aspect-ratio: 1/1.08;
  object-fit: cover;
  border-radius: 150px 150px 30px 30px;
}

figcaption {
  font-size: 12px;
  position: absolute;
  bottom: 13px;
  right: 18px;
  background: #fffaf0db;
  padding: 2px 8px;
  border-radius: 5px;
}

.figure-note {
  position: absolute;
  left: -18px;
  bottom: 45px;
  background: #fff;
  padding: 13px 22px;
  border-radius: 9px;
  box-shadow: 0 8px 32px #073f4910;
  transform: rotate(-5deg);
  font-weight: 700;
}

.benefits {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  padding-top: 30px;
  padding-bottom: 32px;
  border-top: 1px solid #073f4920;
  border-bottom: 1px solid #073f4920;
  gap: 35px;
}

.benefits span {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--orange);
}

h3 {
  font-size: 21px;
  margin: 9px 0;
}

.benefits p, .steps p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 0;
}

.section {
  padding-top: 85px;
  padding-bottom: 85px;
}

h2 {
  font-size: clamp(30px,3.5vw,44px);
  line-height: 1.3;
  letter-spacing: -.025em;
  margin: 16px 0 28px;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.section-heading p {
  color: var(--muted);
}

.course-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.course-grid article {
  padding: 30px;
  background: #fff;
  border: 1px solid #e9e7dc;
  border-radius: 20px;
  position: relative;
}

.course-grid article:nth-child(2), .course-grid article:nth-child(3) {
  background: #edf4f0;
}

.icon {
  height: 48px;
  display: inline-flex;
  align-items: center;
  font-size: 22px;
  font-weight: 800;
  color: var(--orange);
}

.number {
  position: absolute;
  right: 27px;
  top: 24px;
  font-size: 14px;
  color: #81918d;
}

.course-grid p {
  color: var(--muted);
  font-size: 15px;
}

.tags {
  display: flex;
  gap: 7px;
  flex-wrap: wrap;
}

.tags span {
  font-size: 12px;
  border: 1px solid #cad6d0;
  padding: 3px 9px;
  border-radius: 6px;
}

.catalog {
  margin-top: 25px;
  border: 1px solid #d7ded5;
  border-radius: 14px;
  padding: 0 24px;
}

.catalog summary {
  padding: 21px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-weight: 700;
  cursor: pointer;
}

.catalog small {
  font-size: 12px;
  font-weight: 400;
  color: var(--muted);
  margin-left: 14px;
}

.catalog ul {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 12px 28px;
  padding: 0 0 0 20px;
  font-size: 14px;
}

.catalog[open] .plus {
  transform: rotate(45deg);
}

.steps-section {
  background: var(--ink);
  color: var(--paper);
  padding: 65px 0;
}

.steps-section .eyebrow {
  color: #ffb77a;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 30px;
}

.steps b {
  display: block;
  font-size: 35px;
  color: #ffb77a;
  margin-bottom: 18px;
}

.steps p {
  color: #c7d7d7;
}

.faq {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 50px;
}

.faq details {
  border-bottom: 1px solid #d7ded5;
  padding: 17px 0;
}

.faq summary {
  font-weight: 700;
  cursor: pointer;
  min-height: 32px;
}

.faq p {
  color: var(--muted);
  font-size: 15px;
}

.contact {
  background: #f7e5ce;
  border-radius: 30px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  padding-top: 55px;
  padding-bottom: 55px;
}

.contact p {
  color: var(--muted);
}

.contact-tag {
  font-size: 14px;
  border-bottom: 2px solid var(--orange);
  padding-bottom: 6px;
}

.qr-card {
  text-align: center;
  background: #fffaf0;
  border-radius: 20px;
  padding: 28px;
  max-width: 350px;
  width: 100%;
  justify-self: center;
}

.qr-empty {
  width: 172px;
  height: 172px;
  margin: auto;
  border: 1px dashed #8ba7a7;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  background: #f2f3eb;
}

.qr-empty span {
  font-size: 24px;
}

.qr-empty p {
  font-size: 14px;
  margin: 5px;
}

.qr-card h3 {
  font-size: 18px;
  margin-top: 18px;
}

.qr-card>p {
  font-size: 12px;
}

.contact {
  padding-left: 60px;
  padding-right: 60px;
}

footer {
  padding-top: 38px;
  padding-bottom: 38px;
}

footer strong {
  font-size: 20px;
}

footer span {
  font-size: 12px;
  margin-left: 20px;
  color: var(--muted);
}

footer p {
  font-size: 12px;
  max-width: 650px;
  color: var(--muted);
}

.mobile-cta {
  display: none;
}

:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 5px;
}

@media (max-width:720px) {
  header {
    height: 73px;
    padding: 8px 18px;
  }
  .brand {
    width: 155px;
  }
  nav {
    gap: 12px;
  }
  nav>a:not(.small-button) {
    display: none;
  }
  .small-button {
    font-size: 12px;
    padding: 7px 14px;
  }
  .wrap {
    padding-left: 22px;
    padding-right: 22px;
  }
  .hero {
    grid-template-columns: 1fr;
    padding-top: 35px;
    gap: 25px;
    padding-bottom: 36px;
  }
  h1 {
    font-size: 43px;
    margin: 14px 0;
  }
  .lead {
    font-size: 16px;
  }
  .price {
    margin: 22px 0;
  }
  .price strong {
    font-size: 50px;
  }
  .price small {
    font-size: 16px;
  }
  .actions {
    gap: 18px;
  }
  .button {
    padding: 13px 19px;
    font-size: 14px;
  }
  .hero figure {
    margin: 5px 10px 0;
  }
  .hero figure>img {
    aspect-ratio: 1.2;
    border-radius: 85px 85px 22px 22px;
  }
  .figure-note {
    font-size: 13px;
    left: -9px;
    bottom: 35px;
  }
  .benefits {
    grid-template-columns: 1fr;
    gap: 17px;
    margin: 0 22px;
    padding: 22px 0;
  }
  .benefits>div+div {
    border-top: 1px solid #073f4910;
    padding-top: 17px;
  }
  .benefits h3 {
    font-size: 19px;
    margin: 3px 0;
  }
  .section {
    padding-top: 48px;
    padding-bottom: 48px;
  }
  .section-heading {
    display: block;
  }
  .section-heading p {
    font-size: 14px;
    margin-bottom: 25px;
  }
  .course-grid {
    gap: 12px;
  }
  .course-grid article {
    padding: 19px 15px;
    border-radius: 15px;
  }
  .course-grid h3 {
    font-size: 18px;
  }
  .course-grid p {
    font-size: 14px;
  }
  .icon {
    font-size: 19px;
  }
  .number {
    right: 14px;
    top: 19px;
    font-size: 12px;
  }
  .tags span {
    font-size: 12px;
    padding: 2px 5px;
  }
  .catalog {
    padding: 0 15px;
  }
  .catalog small {
    display: block;
    margin: 3px 0 0;
  }
  .catalog ul {
    grid-template-columns: 1fr 1fr;
    font-size: 12px;
    gap: 12px 20px;
    overflow-wrap: anywhere;
  }
  .steps-section {
    padding: 42px 0;
  }
  .steps {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .steps b {
    font-size: 28px;
    margin-bottom: 6px;
  }
  .steps h3 {
    font-size: 18px;
  }
  .faq {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .faq h2 br {
    display: none;
  }
  .contact {
    margin: 0 16px;
    border-radius: 20px;
    grid-template-columns: 1fr;
    padding: 32px 23px;
  }
  .contact h2 br {
    display: none;
  }
  .contact p {
    font-size: 14px;
  }
  .qr-card {
    max-width: 100%;
  }
  footer {
    padding-bottom: 105px;
  }
  footer span {
    display: block;
    margin: 6px 0;
  }
  .mobile-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 23px calc(15px + env(safe-area-inset-bottom));
    background: var(--ink);
    color: white;
    z-index: 20;
    font-weight: 700;
    box-shadow: 0 -3px 15px #073f4915;
  }
  .mobile-cta span {
    color: #ffbd8c;
  }
}

@media (prefers-reduced-motion:reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* ===== 后续追加段 2：整体换肤（青绿）===== */

:root {
  --ink: #315c59;
  --orange: #c65d2c;
  --paper: #fffdf6;
  --muted: #5d7470;
}

header {
  background: rgba(255,253,246,.96);
}

.button, .mobile-cta {
  background: #367d70;
}

.button:hover {
  background: #286657;
}

.steps-section {
  background: #e2f3e8;
  color: var(--ink);
}

.steps-section .eyebrow, .steps b {
  color: #b75b28;
}

.steps p {
  color: #526e65;
}

.course-grid article {
  background: #fff2df;
  border-color: #efeadb;
}

.course-grid article:nth-child(2) {
  background: #e6f3ed;
}

.course-grid article:nth-child(3) {
  background: #eaf4fa;
}

.course-grid article:nth-child(4) {
  background: #fff0e8;
}

.contact {
  background: #edf4df;
}

.price strong {
  color: #c65d2c;
}

.mobile-cta span {
  color: #fff0d7;
}

.brand img {
  filter: none;
}

.qr-original {
  width: 100%;
  height: auto;
  border-radius: 10px;
}

.qr-card {
  max-width: 350px;
}

.qr-card a {
  display: block;
}

.qr-card>p {
  font-size: 14px;
}

.contact-tag {
  color: #315c59;
}

.qr-card {
  background: white;
}

.benefits {
  border-color: #d9e7dc;
}

/* ===== 后续追加段 3：横幅图片与局部微调 ===== */

.reading-banner {
  margin: 0 0 25px;
}

.reading-banner img {
  width: 100%;
  aspect-ratio: 2.7;
  object-fit: cover;
  object-position: center 47%;
  border-radius: 24px;
}

.reading-banner figcaption {
  bottom: 15px;
  right: 20px;
  font-size: 14px;
  padding: 7px 13px;
}

.lesson-banner {
  margin: 0 0 35px;
}

.lesson-banner img {
  width: 100%;
  aspect-ratio: 2.5;
  object-fit: cover;
  object-position: center 48%;
  border-radius: 24px;
}

.lesson-banner figcaption {
  font-size: 12px;
}

.course-grid article {
  box-shadow: 0 5px 16px #496c4b05;
}

.benefits>div {
  border-radius: 12px;
}

.hero {
  background: radial-gradient(ellipse at 80% 50%,#e9f5e880,transparent 65%);
}

@media (max-width:720px) {
  .reading-banner img {
    aspect-ratio: 1.5;
  }
  .lesson-banner img {
    aspect-ratio: 1.5;
  }
  .reading-banner figcaption {
    font-size: 12px;
    right: 12px;
    bottom: 12px;
  }
  .lesson-banner {
    margin-bottom: 25px;
  }
}

/* ===== 后续追加段 4：换肤（灰橙）+ 新增模块 ===== */

:root {
  --ink: #303238;
  --muted: #676b71;
  --orange: #c4511c;
  --paper: #fffaf4;
}

body {
  background: radial-gradient(ellipse at 90% 20%,#fff0df,transparent 40%),#fffaf4;
}

header {
  background: #fffaf4b5;
  backdrop-filter: blur(22px);
  border-bottom: 1px solid #fff;
  transition: background .3s,box-shadow .3s;
}

header.scrolled {
  background: #fffaf4f0;
  box-shadow: 0 5px 25px #332c2210;
}

.brand {
  font-size: 25px;
  font-weight: 800;
  width: 190px;
  flex-shrink: 0;
  white-space: nowrap;
}

.brand img {
  width: 100%;
  height: auto;
  max-height: 66px;
  object-fit: contain;
}

.brand small {
  font-size: 9px;
  letter-spacing: .15em;
  display: block;
  color: #bf642a;
}

.button, .mobile-cta {
  background: linear-gradient(135deg,#f1803d,#c64c20);
  box-shadow: 0 10px 24px #e3773230,inset 0 1px 0 #ffffff50;
  transition: transform .25s,box-shadow .25s;
}

.button:hover {
  background: linear-gradient(135deg,#f18b4e,#c64c20);
  transform: translateY(-3px) scale(1.025);
  box-shadow: 0 15px 30px #e3773240;
}

.button:active {
  transform: translateY(1px) scale(.98);
}

nav {
  margin-left: auto;
}

.nav-button {
  font-size: 14px;
  padding: 10px 16px;
  margin-left: 20px;
}

.hero {
  max-width: 1400px;
  gap: 30px;
  padding-top: 65px;
  padding-bottom: 65px;
  background: radial-gradient(ellipse at 80% 30%,#ffd8ae60,transparent 60%);
}

h1 {
  font-weight: 850;
}

.hero figure>img {
  border-radius: 28px;
  aspect-ratio: 1/1.1;
  box-shadow: 0 30px 65px #754d2320;
}

.hero figure:before {
  content: "";
  position: absolute;
  inset: -15px;
  background: linear-gradient(130deg,#ffc28155,#56c9de25);
  filter: blur(28px);
  z-index: -1;
}

.price strong b {
  font-size: inherit;
  font-weight: inherit;
}

.pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.pills span {
  font-size: 13px;
  padding: 6px 12px;
  border: 1px solid white;
  background: #ffffffbd;
  border-radius: 24px;
  box-shadow: 0 5px 15px #39302705;
}

.hero-qr {
  position: absolute;
  bottom: 25px;
  right: 20px;
  width: 110px;
  padding: 7px;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 10px 30px #2223;
}

.hero-qr span {
  display: block;
  text-align: center;
  font-size: 12px;
}

.hero figcaption {
  right: auto;
  left: 10px;
  bottom: 7px;
  max-width: 65%;
  font-size: 10px;
}

.scroll-cue {
  text-align: center;
  color: #c06b36;
  font-size: 25px;
  animation: breathe 3s infinite;
}

.scroll-cue span {
  display: block;
  font-size: 12px;
  color: #72757a;
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 18px;
}

.adv-grid article {
  padding: 12px;
  background: #ffffffaf;
  backdrop-filter: blur(12px);
  border: 1px solid #fff;
  border-radius: 20px;
  box-shadow: 0 12px 35px #3d2c1e09;
  transition: transform .3s,box-shadow .3s;
}

.adv-grid article:hover {
  transform: translateY(-6px);
  box-shadow: 0 15px 35px #ef985426;
}

.adv-grid img {
  height: 140px;
  object-fit: cover;
  border-radius: 12px;
}

.adv-grid h3 {
  font-size: 19px;
  margin: 17px 8px 5px;
}

.adv-grid p {
  font-size: 14px;
  margin: 5px 8px 12px;
  color: var(--muted);
}

.course-grid article, .course-grid article:nth-child(n) {
  overflow: hidden;
  padding: 0 0 25px;
  background: #ffffffaa;
  border: 1px solid #fff;
  box-shadow: 0 12px 35px #2d32340c;
  transition: transform .3s;
}

.course-grid article:hover {
  transform: translateY(-5px);
}

.course-photo {
  height: 230px;
  object-fit: cover;
  width: 100%;
  margin-bottom: 18px;
}

.course-grid .icon {
  display: none;
}

.course-grid h3, .course-grid p, .course-grid .tags {
  margin-left: 25px;
  margin-right: 25px;
}

.course-grid .number {
  color: white;
  background: #29374370;
  border-radius: 20px;
  padding: 3px 9px;
  backdrop-filter: blur(8px);
}

.material-heading {
  margin-top: 65px;
}

.tag-cloud {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 25px 0;
}

.tag-cloud span {
  padding: 9px 14px;
  background: #fff;
  border: 1px solid #efdfd3;
  border-radius: 10px;
  font-size: 14px;
  transition: .2s;
}

.tag-cloud span:hover {
  transform: scale(1.045);
  border-color: #df915d;
}

.stats {
  background: radial-gradient(at 85% 25%,#244953,#252833 70%);
  color: white;
  padding: 45px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 20px;
}

.stats-grid>div {
  border-left: 1px solid #ffffff30;
  padding-left: 25px;
}

.stats strong {
  font-size: 52px;
  color: #ffae70;
}

.stats span {
  font-size: 15px;
  margin-left: 8px;
}

.stats p {
  font-size: 14px;
  color: #c6cbd0;
  margin: 0;
}

.steps-section {
  background: linear-gradient(135deg,#fff0df,#eef7f7);
  color: var(--ink);
}

.steps-section .eyebrow, .steps b {
  color: #bc622c;
}

.steps p {
  color: var(--muted);
}

.lesson-banner img {
  border: 5px solid #ffffffa0;
  box-shadow: 0 0 45px #60ccde20,0 18px 35px #da8b4d20;
  aspect-ratio: 2.2;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 40px;
}

.trust-grid article>span {
  display: grid;
  place-items: center;
  width: 65px;
  height: 65px;
  border-radius: 50%;
  background: #fff0df;
  color: #b75b25;
  border: 1px solid #f3cbac;
  font-size: 24px;
  box-shadow: 0 0 25px #fba76010;
}

.trust-grid p {
  font-size: 14px;
  color: var(--muted);
}

.contact {
  background: radial-gradient(at 20% 10%,#fff3dd,transparent 60%),linear-gradient(130deg,#ffe6d0,#f4c69d);
  box-shadow: 0 20px 70px #d1823d12;
}

.contact h2 {
  font-size: 42px;
}

.qr-card {
  box-shadow: 0 16px 35px #88502515;
}

.mobile-cta span {
  color: white;
}

.reveal {
  opacity: 1;
}

.motion-ready .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s,transform .7s;
}

.motion-ready .reveal.visible {
  opacity: 1;
  transform: none;
}

@keyframes breathe {
  50% {
    opacity: .4;
    transform: translateY(4px);
  }
}

@media (max-width:720px) {
  header {
    gap: 10px;
  }
  .brand {
    font-size: 19px;
    width: 140px;
  }
  .brand small {
    font-size: 7px;
  }
  .nav-button {
    font-size: 12px;
    padding: 8px 12px;
    margin-left: auto;
  }
  nav {
    display: none;
  }
  .hero {
    padding-top: 35px;
  }
  .hero figure>img {
    border-radius: 24px;
    aspect-ratio: 1.15;
  }
  .hero-qr {
    width: 95px;
    right: 12px;
    bottom: 22px;
  }
  .hero figcaption {
    max-width: 60%;
  }
  .adv-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .adv-grid img {
    height: 105px;
  }
  .adv-grid h3 {
    font-size: 16px;
    margin-left: 3px;
  }
  .adv-grid p {
    font-size: 13px;
    margin-left: 3px;
  }
  .course-photo {
    height: 145px;
  }
  .course-grid h3, .course-grid p, .course-grid .tags {
    margin-left: 14px;
    margin-right: 14px;
  }
  .course-grid h3 {
    font-size: 18px;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 22px;
  }
  .stats strong {
    font-size: 40px;
  }
  .stats-grid>div {
    padding-left: 13px;
  }
  .stats span {
    font-size: 13px;
  }
  .stats p {
    font-size: 12px;
  }
  .lesson-banner img {
    aspect-ratio: 1.4;
  }
  .trust-grid {
    gap: 16px;
  }
  .trust-grid h3 {
    font-size: 17px;
  }
  .trust-grid p {
    font-size: 13px;
  }
  .trust-grid article>span {
    width: 52px;
    height: 52px;
  }
  .contact h2 {
    font-size: 32px;
  }
  .material-heading {
    margin-top: 40px;
  }
}

@media (prefers-reduced-motion:reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .motion-ready .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ===== 后续追加段 5：Hero 价格对比与课堂视频 ===== */

.offer-label {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-top: 22px;
  font-size: 14px;
}

.offer-label>span {
  color: #b84619;
  background: #ffead8;
  padding: 3px 10px;
  border-radius: 6px;
}

.offer-label del {
  color: #72767b;
}

.offer-label+.price {
  margin-top: 8px;
}

.real-class {
  background: #24262b;
  padding: 12px;
  border-radius: 24px;
  box-shadow: 0 24px 55px #48352520;
  overflow: hidden;
}

.real-class video {
  display: block;
  width: 100%;
  max-height: 560px;
  min-height: 280px;
  aspect-ratio: 4/3;
  object-fit: contain;
  background: #161719;
  border-radius: 16px;
}

.hero .real-class figcaption {
  position: static;
  max-width: none;
  background: transparent;
  color: #e4e5e7;
  padding: 10px 3px 3px;
  font-size: 12px;
}

.video-contact {
  display: inline-block;
  color: #ffbd86;
  font-size: 13px;
  padding: 4px 3px;
}

.real-class:before {
  display: none;
}

@media (max-width:720px) {
  .real-class video {
    min-height: 210px;
    max-height: 470px;
  }
  .hero .real-class {
    margin: 0;
  }
  .offer-label {
    margin-top: 18px;
  }
}

/* ===== 新增：外教团队 ===== */

.teacher-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 20px;
  margin-top: 30px;
}

.teacher-card {
  background: #fff;
  border: 1px solid #efdfd3;
  border-radius: 20px;
  padding: 28px 24px;
  box-shadow: 0 10px 30px #2d323408;
  transition: transform .3s;
}

.teacher-card:hover {
  transform: translateY(-5px);
}

.teacher-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: hsl(var(--hue,24),70%,88%);
  display: grid;
  place-items: center;
  font-size: 16px;
  font-weight: 800;
  color: hsl(var(--hue,24),60%,38%);
  margin-bottom: 16px;
}

.teacher-card h3 {
  font-size: 20px;
  margin: 0 0 4px;
}

.teacher-card h3 small {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  margin-left: 8px;
}

.teacher-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin: 10px 0;
}

.teacher-tags span {
  font-size: 12px;
  background: #fff0df;
  color: #b85a1f;
  padding: 3px 10px;
  border-radius: 20px;
}

.teacher-card p {
  font-size: 14px;
  color: var(--muted);
  margin: 10px 0 0;
  line-height: 1.65;
}

.center-note {
  text-align: center;
  margin-top: 22px;
}

/* ===== 新增：家长好评 ===== */

.reviews-section {
  background: linear-gradient(180deg,#fff5e6,transparent 100%);
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 20px;
  margin-top: 30px;
}

.review-card {
  background: #fff;
  border-radius: 20px;
  padding: 26px;
  box-shadow: 0 10px 30px #2d323408;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.review-card .stars {
  color: #f5a623;
  font-size: 16px;
  letter-spacing: 2px;
}

.review-card .quote {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
  margin: 0;
  flex: 1;
}

.review-card .quote::before {
  content: "“";
  color: var(--orange);
  font-size: 28px;
  line-height: 0;
  vertical-align: -8px;
  margin-right: 4px;
}

.reviewer {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px dashed #ead9c5;
}

.avatar-dot {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: hsl(var(--hue,24),70%,88%);
  color: hsl(var(--hue,24),55%,35%);
  display: grid;
  place-items: center;
  font-weight: 700;
  flex-shrink: 0;
}

.reviewer strong {
  display: block;
  font-size: 14px;
}

.reviewer small {
  font-size: 12px;
  color: var(--muted);
}

/* ===== 新增：成人英语折叠 ===== */

.adult-toggle {
  margin-top: 20px;
  border: 1px dashed #d7b89a;
  border-radius: 16px;
  background: #fff8ee;
}

.adult-toggle summary {
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

.adult-toggle summary::-webkit-details-marker {
  display: none;
}

.adult-toggle summary small {
  font-weight: 400;
  color: var(--muted);
  margin-left: 12px;
  font-size: 13px;
}

.adult-toggle .plus {
  transition: transform .25s;
  color: var(--orange);
  font-size: 20px;
}

.adult-toggle[open] .plus {
  transform: rotate(45deg);
}

.adult-inner {
  padding: 0 24px 22px;
}

.adult-inner p {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 14px;
}

.adult-inner .tags span {
  background: #fff;
}

/* ===== 新增：留资表单 ===== */

.contact-form h2 {
  font-size: clamp(28px,3vw,38px);
  margin: 10px 0 12px;
}

.lead-form {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.lead-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.lead-form input, .lead-form select {
  padding: 13px 15px;
  border: 1px solid #e0c9ad;
  border-radius: 12px;
  background: #fff;
  font-size: 15px;
  font-family: inherit;
  color: var(--ink);
  outline: none;
  transition: border-color .2s;
}

.lead-form input:focus, .lead-form select:focus {
  border-color: var(--orange);
}

.lead-form .button {
  justify-content: center;
  margin-top: 6px;
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.lead-form .note {
  margin-top: 4px;
  font-size: 12px;
}

.form-success {
  background: #e6f3ed;
  color: #2f6b4f;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  margin: 0;
}

.qr-card.qr-missing {
  border: 2px dashed #c8b59a;
}

.qr-card.qr-missing::before {
  content: "二维码占位";
  display: block;
  padding: 60px 20px;
  color: #a08b6a;
  font-size: 14px;
}

/* ===== 移动端适配新增模块 ===== */

@media (max-width:720px) {
  .teacher-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .review-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .contact-form h2 {
    font-size: 28px;
  }
  .teacher-card {
    padding: 22px;
  }
}

/* ===== 新增：价格区 Hero 提示行 ===== */

.price-hint {
  font-size: 14px;
  color: var(--muted);
  margin: -14px 0 18px;
}

.price-hint b {
  color: var(--orange);
  font-size: 16px;
}

.price-hint a {
  color: var(--orange);
  font-weight: 700;
  border-bottom: 1px dashed var(--orange);
}

/* ===== 新增：课包方案 ===== */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 18px;
  margin-top: 30px;
  align-items: stretch;
}

.price-card {
  position: relative;
  background: #fff;
  border: 1px solid #efdfd3;
  border-radius: 20px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 24px #2d323406;
  transition: transform .25s,box-shadow .25s;
}

.price-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px #ef985420;
}

.price-card.featured {
  background: linear-gradient(160deg,#fff5e8,#ffe9d4);
  border: 2px solid var(--orange);
  transform: scale(1.02);
}

.price-card.featured:hover {
  transform: scale(1.02) translateY(-5px);
}

.price-card .badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--orange);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 20px;
  white-space: nowrap;
  box-shadow: 0 5px 15px #ed702f40;
}

.plan-name {
  font-size: 15px;
  font-weight: 800;
  color: var(--orange);
  letter-spacing: .02em;
}

.plan-desc {
  font-size: 13px;
  color: var(--muted);
  margin: 4px 0 18px;
}

.plan-price {
  margin-bottom: 18px;
}

.plan-price strong {
  font-size: 44px;
  color: var(--ink);
  line-height: 1;
}

.plan-price span {
  font-size: 14px;
  color: var(--muted);
  margin-left: 4px;
}

.plan-price small {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-top: 6px;
}

.plan-price small b {
  color: var(--orange);
  font-size: 15px;
}

.plan-features {
  list-style: none;
  padding: 0;
  margin: 0 0 22px;
  flex: 1;
  border-top: 1px dashed #ead9c5;
  padding-top: 18px;
}

.plan-features li {
  font-size: 14px;
  color: var(--ink);
  padding: 6px 0 6px 22px;
  position: relative;
}

.plan-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--orange);
  font-weight: 800;
}

.price-card .button {
  justify-content: center;
  width: 100%;
  padding: 13px 18px;
  font-size: 14px;
  gap: 10px;
}

.price-card .button.ghost {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--ink);
}

.price-card .button.ghost:hover {
  background: var(--ink);
  color: #fff;
}

.price-card.featured .button.ghost {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.price-card.featured .button.ghost:hover {
  background: #12535c;
}

@media (max-width:960px) {
  .pricing-grid {
    grid-template-columns: 1fr 1fr;
  }
  .price-card.featured {
    transform: none;
  }
  .price-card.featured:hover {
    transform: translateY(-5px);
  }
}

@media (max-width:720px) {
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .price-card.featured {
    transform: none;
  }
}

/* ===== 课程卡片：年龄小标签 ===== */

.course-grid h3 small {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  margin-left: 8px;
}

/* ===== 联系区：左二维码 + 右"加微信后获得什么" ===== */

.contact {
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: start;
}

.contact-left h2 {
  font-size: clamp(28px,3vw,40px);
  margin: 10px 0 14px;
}

.contact-left p {
  color: var(--muted);
  margin: 0 0 24px;
}

.qr-card.main-qr {
  background: #fff;
  border-radius: 20px;
  padding: 24px;
  max-width: 340px;
  width: 100%;
  justify-self: start;
}

.qr-card.main-qr .qr-original {
  width: 220px;
  height: auto;
  max-width: 100%;
  object-fit: contain;
  border-radius: 0;
  margin: 0 auto;
}

.qr-card .qr-mobile {
  display: none;
}

.qr-card .qr-instruction {
  margin: 12px 0;
  line-height: 1.8;
}

.qr-card .qr-save {
  margin: 16px auto;
  padding: 12px 16px;
  border-radius: 12px;
  background: #315c59;
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}

.qr-card.main-qr h3 {
  margin-top: 16px;
}

.contact-right h3 {
  font-size: 20px;
  margin: 0 0 18px;
  color: var(--ink);
}

.what-you-get {
  list-style: none;
  padding: 0;
  margin: 0 0 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.what-you-get li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: #fff;
  border-radius: 14px;
  padding: 14px 18px;
  box-shadow: 0 4px 14px #332c2208;
}

.what-you-get li::before {
  content: "✓";
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--orange);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 800;
  margin-top: 2px;
}

.what-you-get b {
  display: block;
  font-size: 15px;
  color: var(--ink);
}

.what-you-get span {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-top: 2px;
}

.promise {
  background: var(--ink);
  color: var(--paper);
  border-radius: 14px;
  padding: 18px 22px;
}

.promise h4 {
  margin: 0 0 6px;
  font-size: 14px;
  color: #ffb77a;
  letter-spacing: .05em;
}

.promise p {
  margin: 0;
  font-size: 13px;
  color: #e8ded0;
  line-height: 1.7;
}

@media (max-width:720px) {
  .contact {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .qr-card.main-qr {
    max-width: 100%;
  }
  .qr-card.main-qr .qr-original {
    width: 220px;
    height: auto;
  }
  .qr-card .qr-desktop {
    display: none;
  }
  .qr-card .qr-mobile {
    display: block;
  }
}

/* ===== Hero 价格对比：原价划线 + 立省徽章 ===== */

.price-compare {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 22px;
  flex-wrap: wrap;
}

.old-price {
  font-size: 18px;
  color: #999;
}

.old-price del {
  font-size: 24px;
  font-weight: 700;
  color: #b0b0b0;
  margin: 0 4px;
  text-decoration-thickness: 2.5px;
  text-decoration-color: #e08a5a;
}

.save-badge {
  background: #fff;
  border: 1.5px solid var(--orange);
  color: var(--orange);
  font-size: 13px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 20px;
}

.price {
  margin-top: 10px;
}

/* 课程体系图片 */
.curriculum-image {
  margin: 30px 0 0;
  padding: 20px;
  background: #fffdf9;
  border: 1px solid #e9dfd2;
  border-radius: 24px;
  box-shadow: 0 16px 40px #88502509;
  overflow: hidden;
}
.curriculum-image img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
}
@media (max-width:720px) {
  .curriculum-image { margin-top: 22px; padding: 6px; border-radius: 14px; }
  .curriculum-image img { border-radius: 8px; }
}