/* roulang page: index */
/* ===== Design Variables ===== */
:root {
  --primary: #2f6b4f;
  --primary-dark: #1f4e38;
  --primary-light: #edf4ef;
  --accent: #b08968;
  --accent-dark: #8f6a4d;
  --accent-light: #f7efe6;
  --bg: #f7f5f0;
  --bg-white: #ffffff;
  --text: #1f2923;
  --text-light: #5e6c64;
  --text-muted: #8a948d;
  --border: #ddd8cf;
  --border-light: #ece8e1;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(31, 41, 35, .05);
  --shadow-md: 0 8px 30px rgba(31, 41, 35, .09);
  --shadow-lg: 0 18px 50px rgba(31, 41, 35, .13);
  --transition: .25s cubic-bezier(.4, 0, .2, 1);
  --container-w: 1200px;
  --header-h: 78px;
}

/* ===== Reset / Base ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition), background-color var(--transition), box-shadow var(--transition);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition);
}

ul,
ol {
  list-style: none;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  outline: none;
  background: var(--bg-white);
  transition: border-color var(--transition), box-shadow var(--transition);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47, 107, 79, .15);
}

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: .02em;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 20px rgba(47, 107, 79, .25);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(47, 107, 79, .32);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  border: 1.5px solid var(--primary);
  color: var(--primary);
  background: transparent;
}

.btn-outline:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(47, 107, 79, .12);
}

.btn-outline:active {
  transform: translateY(0);
}

.btn-light {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(0, 0, 0, .1);
}

.btn-light:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, .14);
}

.btn-block {
  width: 100%;
}

/* ===== Badges / Tags ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  letter-spacing: .04em;
}

.badge-accent {
  background: var(--accent-light);
  color: var(--accent-dark);
}

.tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: .03em;
}

/* ===== Section Headers ===== */
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-head .badge {
  margin-bottom: 16px;
}

.section-head h2 {
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.01em;
  margin-bottom: 14px;
}

.section-head p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
}

/* ===== Header / Navigation ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 4px 24px rgba(0, 0, 0, .06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  font-weight: 700;
  font-size: 19px;
  color: var(--primary-dark);
  letter-spacing: .02em;
}

.brand span {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: .12em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-light);
}

.nav-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.nav-link.active {
  color: var(--primary-dark);
  background: var(--primary-light);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  position: relative;
}

.nav-toggle span {
  position: absolute;
  left: 10px;
  right: 10px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 28px; }

.nav-toggle.open span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 680px;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 64px) 0 80px;
  background: linear-gradient(135deg, rgba(31, 78, 56, .88), rgba(47, 107, 79, .76)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0, 0, 0, .35) 100%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 780px;
}

.hero .badge {
  background: rgba(255, 255, 255, .15);
  color: #fff;
  backdrop-filter: blur(8px);
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(30px, 5.5vw, 50px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.01em;
  margin-bottom: 20px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, .2);
}

.hero-desc {
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.85;
  color: rgba(255, 255, 255, .92);
  margin-bottom: 32px;
  max-width: 640px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 40px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px 32px;
  font-size: 14px;
  color: rgba(255, 255, 255, .78);
}

.hero-meta li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-meta li svg,
.hero-meta li .dot {
  flex-shrink: 0;
}

/* ===== Pain Points ===== */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pain-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.pain-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(47, 107, 79, .2);
}

.pain-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
  background: var(--primary-light);
}

.pain-card:nth-child(2) .pain-icon {
  background: var(--accent-light);
}

.pain-card:nth-child(3) .pain-icon {
  background: var(--primary-light);
}

.pain-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}

.pain-card p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.75;
}

/* ===== Core Criteria ===== */
.criteria-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.criteria-item {
  display: flex;
  gap: 20px;
  padding: 32px;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  transition: transform var(--transition), box-shadow var(--transition);
}

.criteria-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.criteria-num {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
}

.criteria-item:nth-child(2) .criteria-num {
  background: var(--accent);
}

.criteria-item:nth-child(3) .criteria-num {
  background: #5a8f7a;
}

.criteria-item:nth-child(4) .criteria-num {
  background: #9a7b5f;
}

.criteria-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.criteria-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.75;
}

.criteria-body .check-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.criteria-body .check-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text);
}

.check-icon {
  color: var(--primary);
  font-weight: 700;
  font-size: 13px;
}

/* ===== Feature Showcase ===== */
.feature-grid {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

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

.feature-row.reverse .feature-content {
  order: 1;
}

.feature-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 3;
}

.feature-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-media-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, .5));
  display: flex;
  align-items: flex-end;
  padding: 24px;
}

.feature-media-overlay span {
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  background: rgba(0, 0, 0, .4);
  backdrop-filter: blur(8px);
  padding: 6px 14px;
  border-radius: 999px;
}

.feature-content h3 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
  color: var(--text);
}

.feature-content p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.85;
  margin-bottom: 16px;
}

.feature-content .tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

/* ===== Step Section ===== */
.steps-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
}

.steps-section .section-head h2,
.steps-section .section-head p {
  color: #fff;
}

.steps-section .section-head p {
  color: rgba(255, 255, 255, .8);
}

.steps-section .badge {
  background: rgba(255, 255, 255, .14);
  color: #fff;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
}

.steps-grid::before {
  content: "";
  position: absolute;
  top: 52px;
  left: 15%;
  right: 15%;
  height: 2px;
  background: rgba(255, 255, 255, .18);
  border-radius: 2px;
}

.step-card {
  position: relative;
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .12);
  backdrop-filter: blur(8px);
  transition: background var(--transition), transform var(--transition);
}

.step-card:hover {
  background: rgba(255, 255, 255, .14);
  transform: translateY(-4px);
}

.step-num {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .2);
}

.step-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-card p {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .82);
}

/* ===== CMS News Section ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.news-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px 30px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.news-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(47, 107, 79, .2);
}

.news-card .tag {
  align-self: flex-start;
  margin-bottom: 12px;
}

.news-card h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.75;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.news-card .news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.news-card .news-meta time {
  display: flex;
  align-items: center;
  gap: 4px;
}

.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 24px;
  background: var(--bg-white);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
  font-size: 15px;
}

/* ===== Stats Section ===== */
.stats-section {
  background: var(--bg);
}

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

.stat-card {
  text-align: center;
  padding: 40px 24px;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  transition: transform var(--transition), box-shadow var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-num {
  font-size: 40px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 8px;
  font-family: "DIN Alternate", "Bahnschrift", "Arial Narrow", sans-serif;
}

.stat-label {
  font-size: 14px;
  color: var(--text-light);
  letter-spacing: .04em;
}

/* ===== Testimonials / Social Proof ===== */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 32px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.testimonial-stars {
  color: #e6a817;
  font-size: 15px;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.testimonial-card blockquote {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  margin-bottom: 20px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border-light);
}

.testimonial-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  flex-shrink: 0;
}

.testimonial-author strong {
  font-size: 14px;
  display: block;
  color: var(--text);
}

.testimonial-author span {
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.faq-item:hover {
  border-color: rgba(47, 107, 79, .25);
}

.faq-question {
  width: 100%;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  background: transparent;
  border-radius: 0;
}

.faq-question .faq-icon {
  position: relative;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-item.open .faq-question .faq-icon {
  transform: rotate(45deg);
}

.faq-question .faq-icon::before,
.faq-question .faq-icon::after {
  content: "";
  position: absolute;
  background: var(--primary);
  border-radius: 2px;
}

.faq-question .faq-icon::before {
  top: 10px;
  left: 0;
  width: 22px;
  height: 2px;
}

.faq-question .faq-icon::after {
  top: 0;
  left: 10px;
  width: 2px;
  height: 22px;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .3s ease;
}

.faq-item.open .faq-answer {
  max-height: 400px;
  padding: 0 28px 24px;
}

.faq-answer p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.85;
  border-top: 1px solid var(--border-light);
  padding-top: 18px;
}

/* ===== CTA Section ===== */
.cta-section {
  position: relative;
  padding: 100px 0;
  background: linear-gradient(135deg, rgba(47, 107, 79, .92), rgba(31, 78, 56, .95)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  text-align: center;
  color: #fff;
}

.cta-section .badge {
  background: rgba(255, 255, 255, .15);
  color: #fff;
}

.cta-section h2 {
  font-size: clamp(28px, 4.5vw, 42px);
  font-weight: 800;
  line-height: 1.3;
  margin: 18px 0 14px;
}

.cta-section p {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .85);
  max-width: 640px;
  margin: 0 auto 36px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

.cta-tips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px 28px;
  margin-top: 40px;
  font-size: 14px;
  color: rgba(255, 255, 255, .75);
}

.cta-tips li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.cta-tips .check-icon {
  color: #9fd1b4;
}

/* ===== Footer ===== */
.site-footer {
  background: #18211c;
  color: #a8b5ad;
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.footer-brand .brand {
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand .brand span {
  color: #7d8a83;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: #8a978f;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: .05em;
}

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

.footer-col ul a {
  font-size: 14px;
  color: #8a978f;
  transition: color var(--transition);
}

.footer-col ul a:hover {
  color: #fff;
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #8a978f;
  margin-bottom: 12px;
}

.footer-contact .contact-ic {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: rgba(255, 255, 255, .06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  flex-shrink: 0;
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #6f7d75;
}

.footer-bottom a {
  color: #8a978f;
}

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

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .section {
    padding: 72px 0;
  }

  .pain-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .feature-row {
    gap: 40px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 64px;
  }

  .container {
    padding: 0 18px;
  }

  .section {
    padding: 56px 0;
  }

  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 16px 20px 24px;
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 16px 40px rgba(0, 0, 0, .1);
    transform: translateY(-120%);
    transition: transform .35s ease;
    z-index: 999;
  }

  .main-nav.open {
    transform: translateY(0);
  }

  .nav-link {
    padding: 14px 20px;
    border-radius: var(--radius-sm);
  }

  .nav-link.active {
    background: var(--primary-light);
  }

  .hero {
    min-height: 580px;
    padding-top: calc(var(--header-h) + 40px);
    padding-bottom: 56px;
  }

  .hero-actions .btn {
    flex: 1;
    justify-content: center;
  }

  .pain-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .criteria-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-row,
  .feature-row.reverse {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .feature-row.reverse .feature-media {
    order: 1;
  }

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

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

  .steps-grid::before {
    display: none;
  }

  .step-card {
    padding: 28px 20px;
  }

  .news-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .testimonial-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .section-head {
    margin-bottom: 40px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    justify-content: center;
  }

  .cta-tips {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 520px) {
  body {
    font-size: 15px;
  }

  .container {
    padding: 0 14px;
  }

  .section {
    padding: 48px 0;
  }

  .brand {
    font-size: 16px;
  }

  .brand span {
    font-size: 11px;
  }

  .hero h1 {
    font-size: 28px;
  }

  .hero-desc {
    font-size: 15px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

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

  .criteria-item {
    flex-direction: column;
    padding: 24px;
  }

  .criteria-num {
    margin-bottom: 4px;
  }

  .news-card {
    padding: 22px;
  }

  .btn {
    width: 100%;
  }

  .faq-question {
    padding: 18px 20px;
    font-size: 15px;
  }

  .faq-item.open .faq-answer {
    padding: 0 20px 20px;
  }
}

/* roulang page: article */
:root {
  --primary: #a67c52;
  --primary-dark: #7d5a39;
  --primary-light: #c9a87f;
  --accent: #e8d5b7;
  --bg: #faf8f4;
  --bg-alt: #f3ede5;
  --text: #2d2a26;
  --text-light: #8b8378;
  --border: #e5ddd2;
  --white: #ffffff;
  --shadow: 0 12px 40px rgba(90, 60, 30, 0.08);
  --shadow-lg: 0 24px 50px rgba(90, 60, 30, 0.12);
  --radius: 18px;
  --radius-sm: 10px;
  --container: 1200px;
  --transition: 0.3s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary); }
button { font-family: inherit; }
ul, ol { list-style: none; }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.5px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  box-shadow: 0 8px 24px rgba(166, 124, 82, 0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(166, 124, 82, 0.35);
  color: var(--white);
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-dark));
}
.btn-outline {
  background: transparent;
  border: 2px solid rgba(255,255,255,0.85);
  color: var(--white);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  transform: translateY(-2px);
  color: var(--white);
}
.btn-outline-dark {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}
.btn-outline-dark:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}
/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 20px rgba(0,0,0,0.04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 1px;
}
.brand span {
  font-size: 12px;
  color: var(--text-light);
  font-weight: 400;
  letter-spacing: 2px;
  margin-top: 2px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 110;
}
.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-link {
  padding: 10px 20px;
  font-size: 15px;
  font-weight: 500;
  border-radius: 50px;
  color: var(--text);
  transition: all var(--transition);
}
.nav-link:hover {
  background: var(--bg-alt);
  color: var(--primary-dark);
}
.nav-link.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  box-shadow: 0 6px 16px rgba(166,124,82,0.25);
}
/* Article Hero */
.article-hero {
  position: relative;
  padding: 120px 0 90px;
  background-size: cover;
  background-position: center;
  color: var(--white);
  isolation: isolate;
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(39,30,22,0.9), rgba(100,70,38,0.72));
  z-index: -1;
}
.article-hero-inner {
  max-width: 900px;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 28px;
}
.breadcrumb a {
  color: rgba(255,255,255,0.85);
  transition: color var(--transition);
}
.breadcrumb a:hover { color: var(--white); }
.breadcrumb-sep { opacity: 0.5; }
.article-hero h1 {
  font-size: 42px;
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 24px;
  text-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  font-size: 14px;
  color: rgba(255,255,255,0.9);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.13);
  padding: 7px 16px;
  border-radius: 50px;
  backdrop-filter: blur(6px);
}
.meta-item svg { width: 14px; height: 14px; flex-shrink: 0; }
/* Article Body */
.article-section {
  padding: 80px 0;
}
.article-container {
  max-width: 900px;
}
.article-content {
  background: var(--white);
  border-radius: var(--radius);
  padding: 60px 64px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.article-content > * + * {
  margin-top: 1.5em;
}
.article-content h2 {
  font-size: 28px;
  color: var(--primary-dark);
  margin-top: 2em;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent);
  line-height: 1.4;
}
.article-content h3 {
  font-size: 22px;
  color: var(--text);
  margin-top: 1.6em;
  line-height: 1.4;
}
.article-content p {
  font-size: 17px;
  line-height: 1.9;
  color: #3d3833;
}
.article-content img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin: 2em 0;
}
.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: var(--bg-alt);
  padding: 20px 28px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--text-light);
}
.article-content ul,
.article-content ol {
  padding-left: 1.6em;
  margin: 1.2em 0;
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li {
  margin-bottom: 0.7em;
  line-height: 1.8;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 15px;
}
.article-content th,
.article-content td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
}
.article-content th {
  background: var(--bg-alt);
  font-weight: 600;
}
.article-content code {
  background: var(--bg-alt);
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 0.9em;
  font-family: "SF Mono", Consolas, monospace;
}
/* Not Found */
.not-found {
  text-align: center;
  padding: 60px 20px;
}
.not-found h2 {
  font-size: 30px;
  color: var(--primary-dark);
  margin-bottom: 16px;
}
.not-found p {
  color: var(--text-light);
  margin-bottom: 30px;
  max-width: 440px;
  margin-left: auto;
  margin-right: auto;
}
/* Related Section */
.related-section {
  padding: 90px 0;
  background: var(--bg-alt);
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 50px;
}
.section-head .section-tag {
  display: inline-block;
  background: var(--accent);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 20px;
  border-radius: 50px;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.section-head h2 {
  font-size: 36px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 14px;
}
.section-head p {
  color: var(--text-light);
  font-size: 16px;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.related-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.related-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.related-card-img {
  position: relative;
  height: 210px;
  overflow: hidden;
}
.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.related-card:hover .related-card-img img {
  transform: scale(1.06);
}
.card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(255,255,255,0.92);
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 50px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.related-card-body {
  padding: 24px 26px 28px;
}
.related-card-body h3 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 10px;
  color: var(--text);
  transition: color var(--transition);
}
.related-card:hover .related-card-body h3 {
  color: var(--primary-dark);
}
.related-card-body p {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 18px;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.card-link:hover { color: var(--primary-dark); }
/* FAQ */
.faq-section {
  padding: 90px 0;
}
.faq-container {
  max-width: 860px;
  margin: 0 auto;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow-lg);
}
.faq-item details {
  padding: 0;
}
.faq-item summary {
  padding: 24px 28px;
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text);
  transition: color var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 24px;
  font-weight: 300;
  color: var(--primary);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item details[open] summary::after {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 28px 26px;
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.85;
  border-top: 1px dashed var(--border);
  padding-top: 18px;
}
.faq-answer p + p { margin-top: 12px; }
/* CTA */
.cta-section {
  position: relative;
  padding: 100px 0;
  background-size: cover;
  background-position: center;
  color: var(--white);
  text-align: center;
  isolation: isolate;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(39,30,22,0.92), rgba(110,75,45,0.8));
  z-index: -1;
}
.cta-inner {
  max-width: 640px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 18px;
}
.cta-inner p {
  font-size: 17px;
  color: rgba(255,255,255,0.9);
  margin-bottom: 34px;
  line-height: 1.8;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.cta-tip {
  margin-top: 24px;
  font-size: 13px;
  color: rgba(255,255,255,0.7);
}
/* Footer */
.site-footer {
  background: #241d16;
  color: rgba(255,255,255,0.72);
  padding: 70px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 50px;
}
.footer-brand .brand {
  color: var(--white);
  margin-bottom: 18px;
}
.footer-brand .brand span {
  color: rgba(255,255,255,0.5);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
  max-width: 300px;
}
.footer-col h4 {
  color: var(--white);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
}
.footer-col ul li {
  margin-bottom: 12px;
}
.footer-col ul a {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  transition: color var(--transition), padding-left var(--transition);
}
.footer-col ul a:hover {
  color: var(--white);
  padding-left: 4px;
}
.footer-contact li {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  display: flex;
  align-items: center;
  gap: 10px;
}
.contact-ic { flex-shrink: 0; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a {
  color: rgba(255,255,255,0.4);
  font-size: 13px;
}
.footer-links a:hover { color: var(--white); }
/* Responsive */
@media (max-width: 1024px) {
  .article-hero h1 { font-size: 36px; }
  .article-content { padding: 44px 36px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .container { padding: 0 18px; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 72px;
    right: 0;
    width: 280px;
    height: calc(100vh - 72px);
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 30px 24px;
    gap: 8px;
    box-shadow: -12px 0 40px rgba(0,0,0,0.1);
    transform: translateX(100%);
    transition: transform 0.35s ease;
    border-left: 1px solid var(--border);
  }
  .main-nav.open { transform: translateX(0); }
  .nav-link {
    display: block;
    width: 100%;
    font-size: 16px;
    padding: 13px 16px;
  }
  .article-hero { padding: 90px 0 60px; }
  .article-hero h1 { font-size: 30px; }
  .article-meta { gap: 12px; }
  .article-content { padding: 34px 22px; }
  .article-content p { font-size: 16px; }
  .card-grid { grid-template-columns: 1fr; }
  .section-head h2 { font-size: 30px; }
  .faq-item summary { font-size: 16px; padding: 20px 20px; }
  .faq-answer { padding: 0 20px 22px; padding-top: 16px; }
  .cta-section { padding: 70px 0; }
  .cta-inner h2 { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; padding-bottom: 30px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .article-hero h1 { font-size: 26px; }
  .meta-item { font-size: 13px; padding: 5px 12px; }
  .brand { font-size: 18px; }
  .brand span { font-size: 11px; }
  .btn { padding: 12px 24px; font-size: 14px; }
  .article-section { padding: 56px 0; }
  .article-content { padding: 26px 18px; border-radius: 14px; }
  .related-section { padding: 60px 0; }
  .faq-section { padding: 60px 0; }
  .cta-inner h2 { font-size: 24px; }
}

/* roulang page: category1 */
:root {
  --primary: #1f3d2b;
  --primary-dark: #14291d;
  --primary-light: #2f5a40;
  --accent: #c8a96a;
  --accent-dark: #ae8e4e;
  --bg: #faf7f2;
  --bg-alt: #f1ebe1;
  --surface: #ffffff;
  --text: #2b2926;
  --text-muted: #6f695f;
  --border: #e5ddd0;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(31, 61, 43, 0.08);
  --shadow-lg: 0 22px 45px rgba(31, 61, 43, 0.14);
  --transition: 0.3s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input, textarea { font-family: inherit; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.93);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(229, 221, 208, 0.8);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(31, 61, 43, 0.07); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}
.brand {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.2;
  font-size: 21px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 0.5px;
}
.brand span {
  font-size: 12px;
  font-weight: 500;
  color: var(--accent-dark);
  letter-spacing: 2px;
  text-transform: uppercase;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  position: relative;
  padding: 9px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 999px;
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: var(--primary); background: rgba(200, 169, 106, 0.12); }
.nav-link.active {
  color: var(--primary);
  background: rgba(200, 169, 106, 0.18);
  font-weight: 600;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: rgba(31, 61, 43, 0.06);
  padding: 0 10px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 22px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.page-hero {
  position: relative;
  background: linear-gradient(135deg, rgba(20, 41, 29, 0.82), rgba(31, 61, 43, 0.55)), url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  color: #fff;
  padding: 120px 0 100px;
  text-align: center;
}
.page-hero .container { position: relative; z-index: 2; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 7px 18px;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 1px;
  color: #f0e7d6;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}
.hero-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.25;
  max-width: 860px;
  margin: 0 auto 20px;
  letter-spacing: 1px;
  text-shadow: 0 3px 20px rgba(0, 0, 0, 0.25);
}
.hero-sub {
  font-size: clamp(15px, 2vw, 18px);
  color: rgba(255, 255, 255, 0.9);
  max-width: 700px;
  margin: 0 auto 38px;
  line-height: 1.85;
}
.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 46px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 999px;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  letter-spacing: 0.5px;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn:focus-visible { outline: 3px solid rgba(200, 169, 106, 0.5); outline-offset: 3px; }
.btn-primary {
  background: var(--accent);
  color: #1f2a15;
  box-shadow: 0 10px 24px rgba(200, 169, 106, 0.35);
}
.btn-primary:hover { background: #d4b57b; box-shadow: 0 14px 30px rgba(200, 169, 106, 0.45); }
.btn-outline {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(4px);
}
.btn-outline:hover { background: rgba(255, 255, 255, 0.2); border-color: #fff; box-shadow: 0 10px 24px rgba(0, 0, 0, 0.16); }
.hero-meta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 26px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.78);
}
.hero-meta span { display: inline-flex; align-items: center; gap: 7px; }
.hero-meta i {
  font-style: normal;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(200, 169, 106, 0.35);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
}

/* ===== Sections ===== */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); }
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px;
}
.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--accent-dark);
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(200, 169, 106, 0.14);
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--primary-dark);
  letter-spacing: 0.5px;
  margin-bottom: 14px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.85;
}

/* ===== Intro ===== */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 56px;
  align-items: center;
}
.intro-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.intro-media img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.intro-media:hover img { transform: scale(1.03); }
.intro-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, transparent 55%, rgba(31, 61, 43, 0.45));
}
.intro-media .media-badge {
  position: absolute;
  left: 20px;
  bottom: 20px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}
.intro-content .section-label { margin-bottom: 12px; }
.intro-content p { color: var(--text-muted); font-size: 15px; margin-bottom: 18px; line-height: 1.9; }
.intro-list { margin: 26px 0 0; }
.intro-list li {
  position: relative;
  padding: 9px 0 9px 34px;
  font-size: 15px;
  color: var(--text);
  border-bottom: 1px dashed var(--border);
}
.intro-list li:last-child { border-bottom: none; }
.intro-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 10px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(200, 169, 106, 0.18);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== Stats ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 34px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 16px;
  text-align: center;
  transition: box-shadow var(--transition), transform var(--transition);
}
.stat-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.stat-num {
  font-size: 30px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}
.stat-label { font-size: 14px; color: var(--text-muted); margin-top: 4px; }

/* ===== Criteria ===== */
.criteria-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.criteria-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.criteria-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: rgba(200, 169, 106, 0.55);
}
.criteria-ic {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(200, 169, 106, 0.2), rgba(31, 61, 43, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}
.criteria-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
  line-height: 1.4;
}
.criteria-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ===== Steps ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.step-item {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px 24px;
  text-align: center;
  transition: box-shadow var(--transition), transform var(--transition);
}
.step-item:hover { box-shadow: var(--shadow-lg); transform: translateY(-5px); }
.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 6px 16px rgba(31, 61, 43, 0.25);
}
.step-item h3 { font-size: 16px; font-weight: 700; color: var(--primary-dark); margin-bottom: 8px; }
.step-item p { font-size: 14px; color: var(--text-muted); line-height: 1.75; }

/* ===== Tips ===== */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.tip-card {
  position: relative;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 26px 24px 24px 28px;
  border-left: 4px solid #d78a5a;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.tip-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.tip-mark {
  font-size: 30px;
  line-height: 1;
  margin-bottom: 12px;
}
.tip-card h3 { font-size: 16px; font-weight: 700; color: var(--primary-dark); margin-bottom: 8px; }
.tip-card p { font-size: 14px; color: var(--text-muted); line-height: 1.75; }

/* ===== Recommend ===== */
.recommend-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.recommend-card {
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: box-shadow var(--transition), transform var(--transition);
}
.recommend-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); }
.recommend-media { position: relative; height: 210px; overflow: hidden; }
.recommend-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.recommend-card:hover .recommend-media img { transform: scale(1.05); }
.recommend-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(20, 41, 29, 0.78);
  color: #f0e7d6;
  font-size: 12px;
  padding: 6px 14px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
  letter-spacing: 0.5px;
}
.recommend-body { padding: 22px 22px 26px; }
.recommend-body h3 { font-size: 18px; font-weight: 700; color: var(--primary-dark); margin-bottom: 8px; }
.recommend-body p { font-size: 14px; color: var(--text-muted); line-height: 1.8; }
.recommend-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-dark);
  transition: gap var(--transition);
}
.recommend-link:hover { gap: 10px; }

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.faq-item.open { border-color: rgba(200, 169, 106, 0.5); box-shadow: var(--shadow); }
.faq-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary-dark);
  transition: background var(--transition);
}
.faq-btn:hover { background: rgba(200, 169, 106, 0.06); }
.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(200, 169, 106, 0.16);
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: transform var(--transition), background var(--transition);
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--accent); color: #fff; }
.faq-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}
.faq-panel-inner {
  padding: 0 24px 22px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.85;
  border-top: 1px dashed var(--border);
  margin-top: 0;
  padding-top: 16px;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  background: linear-gradient(120deg, rgba(20, 41, 29, 0.9), rgba(47, 90, 64, 0.82)), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  color: #fff;
  padding: 90px 0;
  text-align: center;
}
.cta-inner { max-width: 720px; margin: 0 auto; }
.cta-title {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 14px;
}
.cta-desc { font-size: 16px; color: rgba(255, 255, 255, 0.85); margin-bottom: 32px; line-height: 1.85; }
.cta-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; }
.cta-note { margin-top: 20px; font-size: 13px; color: rgba(255, 255, 255, 0.6); }

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr 1fr;
  gap: 44px;
  padding-bottom: 46px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand .brand { color: #fff; margin-bottom: 14px; }
.footer-brand .brand span { color: var(--accent); }
.footer-brand p { font-size: 14px; line-height: 1.85; margin-top: 14px; color: rgba(255, 255, 255, 0.6); max-width: 320px; }
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--transition), padding-left var(--transition);
}
.footer-col ul a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: rgba(255, 255, 255, 0.65); margin-bottom: 12px; }
.contact-ic { font-style: normal; width: 24px; text-align: center; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 0 26px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}
.footer-links { display: flex; gap: 18px; }
.footer-links a { color: rgba(255, 255, 255, 0.45); transition: color var(--transition); }
.footer-links a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .criteria-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .tips-grid { grid-template-columns: repeat(2, 1fr); }
  .recommend-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .intro-grid { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    background: var(--surface);
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 14px 24px 20px;
    box-shadow: 0 20px 34px rgba(31, 61, 43, 0.12);
    border-radius: 0 0 var(--radius) var(--radius);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  }
  .main-nav.open { opacity: 1; visibility: visible; transform: translateY(0); }
  .nav-link { width: 100%; padding: 12px 16px; border-radius: var(--radius-sm); }
  .nav-link.active::after { display: none; }
  .page-hero { padding: 90px 0 70px; }
  .section { padding: 64px 0; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .criteria-grid, .steps-grid, .tips-grid, .recommend-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-actions .btn { width: 100%; }
  .cta-actions .btn { width: 100%; }
  .intro-media img { min-height: 260px; }
  .stats-grid { gap: 12px; }
  .stat-num { font-size: 24px; }
}