/* 分级悦读研究院品牌官网样式 */
/* 主色来自PPT主题：#38957B */

:root {
  --brand-green: #38957B;
  --brand-green-dark: #2A735D;
  --brand-green-light: #E6F5EF;
  --brand-orange: #DD8F49;
  --brand-gold: #E1AB44;
  --brand-teal: #429398;
  --brand-blue: #417EA4;
  --brand-olive: #989D3C;
  --brand-dark: #02170F;
  --brand-light: #F8FDFB;
  --text: #1A2B24;
  --text-secondary: #556B62;
  --muted: #8AA397;
  --bg: #FAFCFB;
  --bg-alt: #F0F8F4;
  --shadow: 0 10px 40px rgba(2, 23, 15, 0.08);
  --shadow-sm: 0 4px 12px rgba(2, 23, 15, 0.06);
  --radius: 16px;
  --radius-sm: 10px;
  --max-width: 1200px;
  --header-h: 72px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--brand-green-dark);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--brand-green);
}

.container {
  width: 92%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section {
  padding: 90px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-title {
  text-align: center;
  margin-bottom: 52px;
}

.section-title h2 {
  font-family: "Source Han Serif SC", "Noto Serif SC", "Songti SC", SimSun, serif;
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  color: var(--brand-dark);
  margin-bottom: 12px;
  font-weight: 700;
}

.section-title .subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 640px;
  margin: 0 auto;
}

.section-title .tag {
  display: inline-block;
  color: var(--brand-green);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
  border: none;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--brand-green);
  color: #fff;
  box-shadow: 0 8px 24px rgba(56, 149, 123, 0.28);
}

.btn-primary:hover {
  background: var(--brand-green-dark);
  color: #fff;
  box-shadow: 0 10px 30px rgba(56, 149, 123, 0.36);
}

.btn-outline {
  background: #fff;
  color: var(--brand-green);
  border: 2px solid var(--brand-green);
}

.btn-outline:hover {
  background: var(--brand-green-light);
  color: var(--brand-green-dark);
}

.btn-gold {
  background: var(--brand-gold);
  color: #3B2705;
  box-shadow: 0 8px 24px rgba(225, 171, 68, 0.28);
}

.btn-gold:hover {
  background: #D19C35;
  color: #3B2705;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  background: rgba(248, 253, 251, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(56, 149, 123, 0.08);
  z-index: 1000;
  transition: box-shadow 0.3s;
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--brand-dark);
}

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand-green) 0%, var(--brand-teal) 100%);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 1.05rem;
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(56, 149, 123, 0.25);
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav a {
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 6px 0;
}

.nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand-green);
  transition: width 0.25s;
  border-radius: 2px;
}

.nav a:hover,
.nav a.active {
  color: var(--brand-green);
}

.nav a:hover::after,
.nav a.active::after {
  width: 100%;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 14px;
}

.header-cta .btn {
  padding: 10px 22px;
  font-size: 0.92rem;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--brand-dark);
  transition: transform 0.25s, opacity 0.25s;
}

/* Hero */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 60px) 0 80px;
  overflow: hidden;
  background: linear-gradient(115deg, var(--brand-light) 0%, #EAF7F2 55%, #DFF3EB 100%);
}

.hero::before {
  content: "";
  position: absolute;
  top: -10%;
  right: -8%;
  width: 58vw;
  height: 58vw;
  background: radial-gradient(circle, rgba(56, 149, 123, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -10%;
  left: -6%;
  width: 42vw;
  height: 42vw;
  background: radial-gradient(circle, rgba(225, 171, 68, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  color: var(--brand-green);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  margin-bottom: 22px;
}

.hero h1 {
  font-family: "Source Han Serif SC", "Noto Serif SC", "Songti SC", SimSun, serif;
  font-size: clamp(2.4rem, 5.2vw, 3.6rem);
  line-height: 1.25;
  color: var(--brand-dark);
  margin-bottom: 24px;
}

.hero h1 span {
  color: var(--brand-green);
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-meta {
  margin-top: 50px;
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

.hero-meta .num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--brand-green);
  line-height: 1;
}

.hero-meta .label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 6px;
}

.hero-visual {
  position: relative;
}

.hero-visual .card-stack {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transform: rotate(1.5deg);
  transition: transform 0.4s;
}

.hero-visual .card-stack:hover {
  transform: rotate(0deg) scale(1.01);
}

.hero-visual img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.hero-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: #fff;
  padding: 18px 22px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  gap: 12px;
  align-items: center;
  z-index: 3;
}

.hero-badge .icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--brand-green-light);
  display: grid;
  place-items: center;
  color: var(--brand-green);
  font-size: 1.4rem;
}

.hero-badge strong {
  display: block;
  font-size: 1.05rem;
  color: var(--brand-dark);
}

.hero-badge span {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Stats bar */
.stats-bar {
  background: var(--brand-green);
  color: #fff;
  padding: 46px 0;
  position: relative;
}

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

.stat-item h3 {
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1;
  margin-bottom: 10px;
}

.stat-item p {
  opacity: 0.92;
  font-size: 0.98rem;
}

/* Feature cards */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.feature-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s, box-shadow 0.25s;
  border-top: 4px solid var(--brand-green);
}

.feature-card:nth-child(2) { border-top-color: var(--brand-orange); }
.feature-card:nth-child(3) { border-top-color: var(--brand-teal); }
.feature-card:nth-child(4) { border-top-color: var(--brand-gold); }

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  margin: 0 auto 18px;
  display: grid;
  place-items: center;
  font-size: 1.8rem;
  background: var(--brand-green-light);
  color: var(--brand-green);
}

.feature-card:nth-child(2) .feature-icon { background: #FDF3E8; color: var(--brand-orange); }
.feature-card:nth-child(3) .feature-icon { background: #EAF6F6; color: var(--brand-teal); }
.feature-card:nth-child(4) .feature-icon { background: #FCF6E6; color: var(--brand-gold); }

.feature-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--brand-dark);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* About intro */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-intro .text h3 {
  font-family: "Source Han Serif SC", "Noto Serif SC", serif;
  font-size: 1.8rem;
  color: var(--brand-dark);
  margin-bottom: 18px;
}

.about-intro .text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.about-intro .image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.about-intro .image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Pillars / pyramid */
.pyramid {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 780px;
  margin: 0 auto;
}

.pyramid-row {
  display: flex;
  justify-content: center;
}

.pyramid-item {
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 22px 28px;
  box-shadow: var(--shadow-sm);
  text-align: center;
  border-left: 4px solid var(--brand-green);
  transition: transform 0.2s;
}

.pyramid-item:hover {
  transform: translateX(6px);
}

.pyramid-item h4 {
  color: var(--brand-dark);
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.pyramid-item p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.pyramid-tag {
  display: inline-block;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--brand-green);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 34px;
  margin-bottom: 10px;
}

/* Process */
.process {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  position: relative;
}

.process::before {
  content: "";
  position: absolute;
  top: 34px;
  left: 8%;
  right: 8%;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-green), var(--brand-teal), var(--brand-gold));
  z-index: 0;
}

.process-step {
  position: relative;
  z-index: 1;
  flex: 1;
  text-align: center;
}

.process-step .dot {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--brand-green);
  display: grid;
  place-items: center;
  margin: 0 auto 18px;
  font-size: 1.6rem;
  box-shadow: var(--shadow-sm);
}

.process-step:nth-child(2) .dot { border-color: var(--brand-teal); color: var(--brand-teal); }
.process-step:nth-child(3) .dot { border-color: var(--brand-gold); color: var(--brand-gold); }
.process-step:nth-child(4) .dot { border-color: var(--brand-orange); color: var(--brand-orange); }
.process-step:nth-child(5) .dot { border-color: var(--brand-blue); color: var(--brand-blue); }
.process-step:nth-child(6) .dot { border-color: var(--brand-olive); color: var(--brand-olive); }

.process-step h4 {
  font-size: 1.05rem;
  color: var(--brand-dark);
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* Cards generic */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s, box-shadow 0.25s;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.card-body {
  padding: 24px;
}

.card-body h3 {
  font-size: 1.2rem;
  color: var(--brand-dark);
  margin-bottom: 10px;
}

.card-body p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.card-body .tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--brand-green-light);
  color: var(--brand-green);
  margin-bottom: 10px;
}

/* Experts */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.expert-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 34px 28px;
  box-shadow: var(--shadow-sm);
  border-top: 4px solid var(--brand-green);
}

.expert-card:nth-child(2) { border-top-color: var(--brand-orange); }
.expert-card:nth-child(3) { border-top-color: var(--brand-blue); }

.expert-card h3 {
  font-size: 1.25rem;
  color: var(--brand-dark);
  margin-bottom: 6px;
}

.expert-card .role {
  color: var(--brand-green);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 14px;
}

.expert-card ul {
  list-style: none;
}

.expert-card li {
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 6px 0;
  border-bottom: 1px dashed rgba(56, 149, 123, 0.15);
}

.expert-card li:last-child { border-bottom: none; }

/* Timeline / list */
.timeline {
  border-left: 3px solid var(--brand-green);
  padding-left: 28px;
}

.timeline-item {
  position: relative;
  padding-bottom: 28px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -37px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--brand-green);
}

.timeline-item h4 {
  color: var(--brand-dark);
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.timeline-item p {
  color: var(--text-secondary);
}

/* FAQ block */
.faq-block {
  background: #fff;
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

.faq-block h3 {
  font-family: "Source Han Serif SC", "Noto Serif SC", serif;
  font-size: 1.5rem;
  color: var(--brand-dark);
  margin-bottom: 16px;
}

.faq-block p {
  color: var(--text-secondary);
}

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

.ability-card {
  background: linear-gradient(135deg, #fff 0%, var(--brand-green-light) 100%);
  border-radius: var(--radius-sm);
  padding: 26px 20px;
  text-align: center;
  border: 1px solid rgba(56, 149, 123, 0.12);
}

.ability-card h4 {
  color: var(--brand-green-dark);
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.ability-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Growth stages */
.stage-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.stage-pill {
  background: #fff;
  border: 2px solid var(--brand-green);
  color: var(--brand-green);
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
}

.stage-arrow {
  color: var(--brand-gold);
  font-size: 1.4rem;
  align-self: center;
}

/* Join / network */
.network-lists {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.network-list h3 {
  font-size: 1.25rem;
  color: var(--brand-dark);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.network-list ul {
  list-style: none;
}

.network-list li {
  padding: 10px 0;
  border-bottom: 1px solid rgba(56, 149, 123, 0.1);
  color: var(--text-secondary);
  display: flex;
  gap: 10px;
}

.network-list li::before {
  content: "•";
  color: var(--brand-green);
  font-weight: 700;
}

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

.goal-card {
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.goal-card h4 {
  font-size: 1.8rem;
  color: var(--brand-green);
  margin-bottom: 8px;
}

.goal-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* CTA section */
.cta-section {
  background: linear-gradient(115deg, var(--brand-green) 0%, var(--brand-teal) 100%);
  color: #fff;
  text-align: center;
  padding: 90px 0;
  border-radius: 0;
}

.cta-section h2 {
  font-family: "Source Han Serif SC", "Noto Serif SC", serif;
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  margin-bottom: 16px;
}

.cta-section p {
  opacity: 0.92;
  max-width: 640px;
  margin: 0 auto 30px;
  font-size: 1.05rem;
}

.cta-section .btn {
  background: #fff;
  color: var(--brand-green);
}

.cta-section .btn:hover {
  background: var(--brand-light);
}

/* 表单反馈（云服务提交结果） */
.form-feedback {
  display: none;
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 0.92rem;
  line-height: 1.6;
}

.form-feedback.pending {
  display: block;
  background: #F3F7F5;
  color: var(--text-secondary);
}

.form-feedback.success {
  display: block;
  background: var(--brand-green-light);
  color: var(--brand-green-dark);
  border: 1px solid rgba(56, 149, 123, 0.25);
}

.form-feedback.error {
  display: block;
  background: #FDF1EE;
  color: #B4442B;
  border: 1px solid rgba(180, 68, 43, 0.22);
}

/* 联系表单 */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 40px;
  align-items: start;
}

.contact-info {
  background: #fff;
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: var(--shadow-sm);
}

.contact-info h3 {
  font-size: 1.3rem;
  color: var(--brand-dark);
  margin-bottom: 20px;
}

.contact-row {
  display: flex;
  gap: 14px;
  margin-bottom: 20px;
  color: var(--text-secondary);
}

.contact-row .icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--brand-green-light);
  color: var(--brand-green);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.contact-row strong {
  display: block;
  color: var(--brand-dark);
  margin-bottom: 4px;
}

.contact-form {
  background: #fff;
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--brand-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(56, 149, 123, 0.2);
  border-radius: 10px;
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--brand-green);
  box-shadow: 0 0 0 3px rgba(56, 149, 123, 0.1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

/* Footer */
.footer {
  background: var(--brand-dark);
  color: #B8D4C8;
  padding: 60px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 0.92rem;
  line-height: 1.8;
  max-width: 320px;
}

.footer h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 18px;
}

.footer ul {
  list-style: none;
}

.footer li {
  margin-bottom: 10px;
}

.footer a {
  color: #B8D4C8;
  font-size: 0.92rem;
}

.footer a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Breadcrumb */
.breadcrumb {
  background: var(--brand-green-light);
  padding: 110px 0 40px;
}

.breadcrumb h1 {
  font-family: "Source Han Serif SC", "Noto Serif SC", serif;
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--brand-dark);
  margin-bottom: 8px;
}

.breadcrumb p {
  color: var(--text-secondary);
}

/* Page section compact */
.page-section {
  padding: 70px 0;
}

/* Responsive */
@media (max-width: 1024px) {
  .nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    width: min(320px, 80vw);
    height: calc(100vh - var(--header-h));
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 30px;
    gap: 18px;
    box-shadow: var(--shadow);
    transform: translateX(110%);
    transition: transform 0.3s;
  }

  .nav.open {
    transform: translateX(0);
  }

  .mobile-toggle {
    display: flex;
  }

  .header-cta {
    display: none;
  }

  .hero .container {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }

  .feature-grid,
  .ability-grid,
  .goal-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process::before { display: none; }
  .process {
    flex-direction: column;
    gap: 30px;
  }

  .card-grid,
  .expert-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-intro,
  .contact-grid,
  .network-lists {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .hero { padding-top: calc(var(--header-h) + 40px); }
  .feature-grid,
  .ability-grid,
  .goal-grid,
  .card-grid,
  .expert-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-meta { gap: 24px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px 12px; }
  .form-row { grid-template-columns: 1fr; }
  .hero-badge { left: 10px; bottom: -10px; padding: 12px 16px; }
}