/* ============================================================
   mrds每日大赛 · 每日大赛在线 · 每天都是比赛日
   设计系统 v1.0 — 「Game Day Editorial 赛日编辑部」
   © mrdsmeiri.net.cn
   ============================================================ */

/* ---------- 基础重置 ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --cream: #F6F3EE;
  --paper: #FCFAF7;
  --mint: #E8F2F0;
  --ink: #1C1A17;
  --orange: #E4581C;
  --teal: #0F8077;
  --gold: #F4B41A;
  --purple: #6C5CE7;
  --line: #E3DED5;
  --gray: #6E6861;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  overflow-x: hidden;
  background: var(--cream);
  color: var(--ink);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  counter-reset: sectionCounter;
}

::selection {
  background: var(--orange);
  color: #fff;
}

:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- 核心布局 ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

.section {
  padding: 100px 0;
  position: relative;
  counter-increment: sectionCounter;
  overflow: hidden;
}

.section:nth-child(even) {
  background: var(--mint);
}

.section::after {
  content: counter(sectionCounter, decimal-leading-zero);
  position: absolute;
  right: 18px;
  bottom: -14px;
  font-size: 150px;
  font-weight: 900;
  font-style: italic;
  line-height: 1;
  letter-spacing: -10px;
  color: transparent;
  -webkit-text-stroke: 2px rgba(28, 26, 23, 0.055);
  pointer-events: none;
  z-index: 1;
}

.section:nth-child(even)::after {
  -webkit-text-stroke-color: rgba(15, 128, 119, 0.08);
}

.section:nth-child(even)::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(15, 128, 119, 0.055) 1px, transparent 1px);
  background-size: 20px 20px;
  pointer-events: none;
  z-index: 1;
}

/* ---------- 导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(246, 243, 238, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 2.5px solid var(--ink);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.28rem;
  letter-spacing: -0.6px;
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.25s cubic-bezier(0.65, 0, 0.35, 1);
}

.logo:hover {
  transform: scale(1.04) rotate(-1deg);
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 900;
  background: var(--orange);
  color: #fff;
  border: 2px solid var(--ink);
  box-shadow: 2.5px 2.5px 0 var(--ink);
  letter-spacing: 0;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink);
  position: relative;
  letter-spacing: 0.3px;
  transition: color 0.25s;
}

.main-nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--orange);
  border-radius: 4px;
  transition: width 0.3s cubic-bezier(0.65, 0, 0.35, 1);
}

.main-nav a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-cta {
  padding: 9px 26px;
  border-radius: 100px;
  color: #fff !important;
  font-weight: 700;
  background: var(--ink);
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--orange);
  transition: transform 0.2s, box-shadow 0.2s;
}

.nav-cta:hover {
  transform: translate(-1.5px, -1.5px);
  box-shadow: 5px 5px 0 var(--orange);
}

.nav-cta:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 var(--orange);
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 44px;
  border: 2.5px solid var(--ink);
  border-radius: 12px;
  background: var(--paper);
  cursor: pointer;
  position: relative;
  transition: background 0.2s, transform 0.2s;
}

.menu-toggle:hover {
  background: var(--gold);
}

.menu-toggle::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 10px;
  width: 22px;
  height: 2.5px;
  background: var(--ink);
  border-radius: 4px;
  box-shadow: 0 8px 0 var(--ink), 0 16px 0 var(--ink);
  pointer-events: none;
}

/* ---------- 首页 Hero ---------- */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 144px 0 88px;
  background: var(--cream);
}

.hero::before {
  content: '24';
  position: absolute;
  right: -30px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 400px;
  font-weight: 900;
  font-style: italic;
  line-height: 1;
  letter-spacing: -24px;
  color: transparent;
  -webkit-text-stroke: 2.5px rgba(228, 88, 28, 0.10);
  pointer-events: none;
  z-index: 1;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 56px;
  align-items: center;
  width: 100%;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  padding: 7px 18px;
  border-radius: 100px;
  background: var(--mint);
  border: 2px solid var(--ink);
  margin-bottom: 22px;
  color: var(--ink);
}

.hero-eyebrow::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
  animation: live-pulse 2s infinite;
}

@keyframes live-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(228, 88, 28, 0.4); }
  50% { box-shadow: 0 0 0 7px rgba(228, 88, 28, 0); }
}

.hero h1 {
  font-size: 3.1rem;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -2.5px;
  margin-bottom: 22px;
}

.hero p {
  font-size: 1.08rem;
  color: var(--gray);
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.75;
}

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

.hero-image {
  border-radius: 22px;
  overflow: hidden;
  border: 3px solid var(--ink);
  box-shadow: 10px 10px 0 var(--teal);
  position: relative;
  z-index: 2;
  min-height: 340px;
  background: linear-gradient(145deg, var(--teal), var(--mint));
}

.hero-image img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  max-height: 520px;
  object-fit: cover;
  display: block;
}

.hero-image::after {
  content: 'VS';
  position: absolute;
  top: 18px;
  right: 18px;
  width: 60px;
  height: 60px;
  background: var(--gold);
  border: 3px solid var(--ink);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.1rem;
  letter-spacing: 1px;
  transform: rotate(12deg);
  box-shadow: 3px 3px 0 var(--ink);
  z-index: 3;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 100px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid var(--ink);
  text-decoration: none;
  letter-spacing: 0.3px;
  line-height: 1.2;
  transition: transform 0.25s cubic-bezier(0.65, 0, 0.35, 1),
              box-shadow 0.25s cubic-bezier(0.65, 0, 0.35, 1),
              background 0.25s, color 0.25s;
}

.btn-primary {
  color: #fff;
  background: var(--orange);
  box-shadow: 5px 5px 0 var(--ink);
}

.btn-primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--ink);
}

.btn-primary:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--ink);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--ink);
  color: var(--ink);
  box-shadow: 4px 4px 0 rgba(28, 26, 23, 0.1);
}

.btn-outline:hover {
  background: var(--ink);
  color: var(--cream);
  box-shadow: 6px 6px 0 var(--teal);
}

/* ---------- 标签 / 标题 ---------- */
.section-label {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 3.5px;
  text-transform: uppercase;
  padding: 5px 16px;
  background: var(--gold);
  border-left: 4px solid var(--ink);
  margin-bottom: 14px;
  transform: rotate(-2deg);
}

.section:nth-child(even) .section-label {
  background: var(--teal);
  color: #fff;
  border-left-color: var(--gold);
  transform: rotate(1.5deg);
}

.section-title {
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: -1.5px;
  line-height: 1.15;
  margin-bottom: 16px;
  position: relative;
}

.section-desc {
  max-width: 600px;
  color: var(--gray);
  font-size: 1.02rem;
  line-height: 1.7;
  margin-bottom: 48px;
}

/* ---------- 卡片网格 ---------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}

.category-card {
  border-radius: 16px;
  padding: 32px 28px;
  border: 2px solid var(--ink);
  background: var(--paper);
  transition: transform 0.3s cubic-bezier(0.65, 0, 0.35, 1),
              box-shadow 0.3s cubic-bezier(0.65, 0, 0.35, 1),
              background 0.2s;
  position: relative;
  overflow: hidden;
}

.category-card::after {
  content: '';
  position: absolute;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  right: -20px;
  top: -20px;
  background: rgba(228, 88, 28, 0.08);
  transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
}

.category-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 8px 8px 0 var(--ink);
  background: #fff;
}

.category-card:hover::after {
  transform: scale(1.35);
}

.category-card:nth-child(1) {
  border-left: 9px solid var(--orange);
}

.category-card:nth-child(2) {
  border-left: 9px solid var(--teal);
}

.category-card:nth-child(3) {
  border-left: 9px solid var(--gold);
}

.category-card:nth-child(4) {
  border-left: 9px solid var(--purple);
}

.card-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  background: var(--orange);
  border: 2px solid var(--ink);
  color: #fff;
  box-shadow: 3px 3px 0 rgba(28, 26, 23, 0.15);
  position: relative;
  z-index: 1;
}

.category-card:nth-child(2) .card-icon {
  background: var(--teal);
}

.category-card:nth-child(3) .card-icon {
  background: var(--gold);
  color: var(--ink);
}

.category-card:nth-child(4) .card-icon {
  background: var(--purple);
}

.category-card h3 {
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: -0.3px;
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}

.category-card p {
  font-size: 0.92rem;
  color: var(--gray);
  line-height: 1.65;
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 0.86rem;
  color: var(--orange);
  text-decoration: none;
  position: relative;
  z-index: 1;
}

.card-link::after {
  content: '→';
  transition: transform 0.2s;
}

.card-link:hover::after {
  transform: translateX(5px);
}

.category-card:nth-child(2) .card-link {
  color: var(--teal);
}

.category-card:nth-child(3) .card-link {
  color: #B07C00;
}

.category-card:nth-child(4) .card-link {
  color: var(--purple);
}

/* ---------- 特性块 ---------- */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.feature-image {
  border-radius: 22px;
  overflow: hidden;
  border: 3px solid var(--ink);
  box-shadow: 10px 10px 0 var(--gold);
  position: relative;
  min-height: 340px;
  background: linear-gradient(140deg, var(--gold) 0%, var(--orange) 100%);
}

.feature-image img {
  width: 100%;
  height: 100%;
  min-height: 340px;
  object-fit: cover;
  display: block;
  position: absolute;
  inset: 0;
}

.feature-text {
  position: relative;
}

.feature-text h2 {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1.18;
  margin-bottom: 16px;
}

.feature-text p {
  color: var(--gray);
  line-height: 1.75;
  margin-bottom: 14px;
}

.feature-list {
  list-style: none;
  margin-top: 8px;
}

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  border-bottom: 1px dashed var(--line);
}

.feature-list li:last-child {
  border-bottom: none;
}

.feature-list li::before {
  content: '✓';
  font-weight: 900;
  font-size: 0.75rem;
  color: var(--teal);
  background: rgba(15, 128, 119, 0.12);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1.5px solid rgba(15, 128, 119, 0.3);
}

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

.stat-item {
  padding: 34px 24px 30px;
  border-radius: 18px;
  border: 2px solid var(--ink);
  background: var(--paper);
  position: relative;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.65, 0, 0.35, 1),
              box-shadow 0.3s cubic-bezier(0.65, 0, 0.35, 1);
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 6px 6px 0 var(--ink);
}

.stat-item::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 8px;
  background: var(--orange);
}

.stat-item:nth-child(2)::before {
  background: var(--teal);
}

.stat-item:nth-child(3)::before {
  background: var(--gold);
}

.stat-item:nth-child(4)::before {
  background: var(--purple);
}

.stat-number {
  font-size: 2.9rem;
  font-weight: 900;
  letter-spacing: -2.5px;
  line-height: 1.05;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  justify-content: center;
}

.stat-number::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--orange);
  margin-left: 2px;
}

.stat-item:nth-child(2) .stat-number::after {
  color: var(--teal);
}

.stat-item:nth-child(3) .stat-number::after {
  color: #B07C00;
}

.stat-item:nth-child(4) .stat-number::after {
  color: var(--purple);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--gray);
  margin-top: 10px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

/* ---------- 内容墙 ---------- */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.content-wall-item {
  border-radius: 16px;
  overflow: hidden;
  border: 2px solid var(--ink);
  background: var(--paper);
  transition: transform 0.3s cubic-bezier(0.65, 0, 0.35, 1),
              box-shadow 0.3s cubic-bezier(0.65, 0, 0.35, 1);
}

.content-wall-item:hover {
  transform: translate(-3px, -3px);
  box-shadow: 7px 7px 0 var(--ink);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 2.5px solid var(--ink);
  background: var(--mint);
  display: block;
}

.content-wall-body {
  padding: 22px;
}

.content-wall-body time {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--teal);
  display: inline-block;
  margin-bottom: 6px;
}

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.3px;
  margin-bottom: 6px;
  line-height: 1.35;
}

.content-wall-body p {
  font-size: 0.9rem;
  color: var(--gray);
  line-height: 1.65;
  margin-bottom: 12px;
}

.content-wall-body a {
  color: var(--orange);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.content-wall-body a::after {
  content: '→';
  transition: transform 0.2s;
}

.content-wall-body a:hover::after {
  transform: translateX(4px);
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 2px solid var(--ink);
  border-radius: 14px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  background: var(--paper);
  transition: box-shadow 0.25s cubic-bezier(0.65, 0, 0.35, 1),
              transform 0.25s cubic-bezier(0.65, 0, 0.35, 1);
}

.faq-item:hover {
  box-shadow: 4px 4px 0 var(--ink);
  transform: translate(-1px, -1px);
}

.faq-item .faq-question {
  padding: 18px 24px;
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  position: relative;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.6rem;
  font-weight: 400;
  line-height: 1;
  color: var(--orange);
  transition: transform 0.35s cubic-bezier(0.65, 0, 0.35, 1),
              color 0.2s;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
  color: var(--teal);
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.75;
}

.faq-item.open .faq-answer {
  display: block;
  animation: faq-fade 0.35s ease;
}

@keyframes faq-fade {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- CTA 横幅 ---------- */
.cta-banner {
  padding: 64px 48px;
  text-align: center;
  border-radius: 22px;
  background: var(--orange);
  border: 3px solid var(--ink);
  box-shadow: 10px 10px 0 var(--teal);
  position: relative;
  overflow: hidden;
  color: #fff;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 140px;
  height: 140px;
  background: var(--gold);
  border: 3px solid var(--ink);
  border-radius: 50%;
  z-index: 1;
}

.cta-banner::after {
  content: 'PLAY';
  position: absolute;
  bottom: -16px;
  left: 18px;
  font-size: 4.5rem;
  font-weight: 900;
  font-style: italic;
  letter-spacing: -3px;
  color: rgba(255, 255, 255, 0.12);
  z-index: 1;
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2.1rem;
  font-weight: 900;
  letter-spacing: -1.5px;
  margin-bottom: 12px;
  position: relative;
  z-index: 2;
}

.cta-banner p {
  position: relative;
  z-index: 2;
  opacity: 0.9;
  max-width: 560px;
  margin: 0 auto 28px;
  line-height: 1.7;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--ink);
  border-color: var(--ink);
  box-shadow: 5px 5px 0 var(--ink);
  position: relative;
  z-index: 2;
}

.cta-banner .btn-primary:hover {
  background: var(--gold);
  box-shadow: 7px 7px 0 var(--ink);
}

.cta-banner .btn-outline {
  color: #fff;
  border-color: #fff;
  background: transparent;
  box-shadow: 4px 4px 0 rgba(255, 255, 255, 0.25);
  position: relative;
  z-index: 2;
}

.cta-banner .btn-outline:hover {
  background: #fff;
  color: var(--ink);
}

/* ---------- 页脚 ---------- */
.site-footer {
  padding: 64px 0 28px;
  background: var(--paper);
  color: var(--ink);
  position: relative;
  border-top: 3px solid var(--ink);
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 7px;
  background: repeating-linear-gradient(
    90deg,
    var(--orange) 0 50px,
    var(--teal) 50px 100px,
    var(--gold) 100px 150px,
    var(--purple) 150px 200px,
    var(--ink) 200px 250px
  );
  border-bottom: 2px solid var(--ink);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  margin-top: 16px;
  color: var(--gray);
  font-size: 0.94rem;
  max-width: 300px;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 18px;
  color: var(--ink);
  position: relative;
  padding-bottom: 8px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 3px;
  background: var(--orange);
  border-radius: 4px;
}

.footer-col a {
  display: block;
  color: var(--gray);
  text-decoration: none;
  padding: 5px 0;
  font-size: 0.92rem;
  transition: color 0.2s, transform 0.2s;
}

.footer-col a:hover {
  color: var(--orange);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 2px solid var(--line);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--gray);
}

.footer-bottom a {
  color: var(--teal);
  text-decoration: none;
  font-weight: 600;
}

.footer-bottom a:hover {
  text-decoration: underline;
}

/* ---------- 工具类 ---------- */
.text-accent {
  color: var(--orange);
}

.text-center {
  text-align: center;
}

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  color: var(--gray);
  line-height: 1.75;
  text-align: center;
  font-size: 1rem;
}

.mt-0 {
  margin-top: 0;
}

.mb-0 {
  margin-bottom: 0;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-image {
    max-width: 680px;
  }

  .hero-image img {
    min-height: 360px;
    max-height: 440px;
  }

  .hero h1 {
    font-size: 2.6rem;
  }

  .section {
    padding: 80px 0;
  }
}

@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--paper);
    padding: 24px;
    gap: 6px;
    border-bottom: 3px solid var(--ink);
    box-shadow: 0 14px 30px rgba(28, 26, 23, 0.1);
  }

  .main-nav.open a {
    padding: 12px 0;
    font-size: 1.02rem;
    border-bottom: 1px solid var(--line);
    width: 100%;
  }

  .main-nav.open a:last-of-type {
    border-bottom: none;
  }

  .main-nav.open .nav-cta {
    margin-top: 14px;
    text-align: center;
    justify-content: center;
    display: inline-flex;
  }

  .hero {
    padding: 120px 0 72px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .section-desc {
    margin-bottom: 36px;
  }

  .stat-number {
    font-size: 2.4rem;
  }

  .cta-banner {
    padding: 48px 28px;
  }

  .cta-banner h2 {
    font-size: 1.7rem;
  }

  .site-footer::before {
    height: 5px;
    background-size: 150px 5px;
  }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .hero::before {
    font-size: 260px;
    letter-spacing: -16px;
  }

  .hero h1 {
    font-size: 1.9rem;
    letter-spacing: -1.5px;
  }

  .hero p {
    font-size: 1rem;
  }

  .hero-image {
    min-height: 260px;
  }

  .hero-image img {
    min-height: 260px;
  }

  .section {
    padding: 56px 0;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .feature-image {
    min-height: 260px;
  }

  .feature-image img {
    min-height: 260px;
  }

  .faq-item .faq-question {
    padding: 16px 18px;
    font-size: 0.95rem;
  }

  .faq-item .faq-answer {
    padding: 0 18px 16px;
  }

  .cta-banner {
    padding: 40px 20px;
    border-radius: 16px;
    box-shadow: 6px 6px 0 var(--teal);
  }

  .cta-banner h2 {
    font-size: 1.4rem;
  }

  .footer-bottom {
    font-size: 0.8rem;
  }
}

/* ---------- 动效 ---------- */
@keyframes hero-badge-in {
  from {
    transform: rotate(12deg) scale(0);
  }
  to {
    transform: rotate(12deg) scale(1);
  }
}

.hero-image::after {
  animation: hero-badge-in 0.5s 0.3s cubic-bezier(0.65, 0, 0.35, 1) both;
}