/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: #1F2937; line-height: 1.6; background: #fff;
}
a { text-decoration: none; color: inherit; transition: color .2s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== Colors ===== */
:root {
  --blue: #2563EB;
  --blue-dark: #1D4ED8;
  --blue-light: #EFF6FF;
  --purple: #7C3AED;
  --orange: #F59E0B;
  --orange-dark: #D97706;
  --green: #10B981;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-500: #6B7280;
  --gray-700: #374151;
  --gray-900: #1F2937;
  --white: #FFFFFF;
  --shadow: 0 8px 32px rgba(0,0,0,.1);
  --shadow-sm: 0 4px 12px rgba(0,0,0,.06);
  --shadow-color: 0 8px 30px rgba(37,99,235,.18);
  --radius: 16px;
  --gradient: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
  --gradient-light: linear-gradient(135deg, #EFF6FF 0%, #EDE9FE 100%);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 28px; font-size: 15px; font-weight: 600;
  border: none; cursor: pointer; transition: all .3s;
}
.btn-primary { background: var(--gradient); color: #fff; box-shadow: 0 4px 16px rgba(37,99,235,.3), 0 0 20px rgba(124,58,237,.2); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,.4), 0 0 30px rgba(124,58,237,.3); }
.btn-outline { background: transparent; color: var(--blue); border: 2px solid var(--blue); }
.btn-outline:hover { background: var(--blue); color: #fff; }
.btn-white { background: #fff; color: var(--blue); box-shadow: 0 4px 16px rgba(0,0,0,.1); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.15); }
.btn-sm { padding: 8px 20px; font-size: 14px; border-radius: 20px; }
.btn-lg { padding: 16px 40px; font-size: 17px; border-radius: 32px; }
.btn-block { width: 100%; justify-content: center; }

/* ===== Header ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(15,23,42,.25);
  border-bottom: 1px solid rgba(255,255,255,.1); transition: all .3s;
}
.header::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
  background: var(--gradient); opacity: 0; transition: opacity .3s;
}
.header.scrolled {
  background: rgba(15,23,42,.85);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 24px rgba(0,0,0,.3);
}
.header.scrolled::after { opacity: 1; }
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 0; height: 56px;
}
.logo { margin-left: 184px; }
.logo a { display: flex; align-items: center; gap: 8px; }
.logo-img {
  height: 128px; width: auto; mix-blend-mode: screen; border-radius: 4px;
  margin-top: -36px; margin-bottom: -36px;
  filter: drop-shadow(1px 0 0 rgba(255,255,255,.7)) drop-shadow(-1px 0 0 rgba(255,255,255,.7))
          drop-shadow(0 1px 0 rgba(255,255,255,.7)) drop-shadow(0 -1px 0 rgba(255,255,255,.7))
          drop-shadow(0 0 6px rgba(255,255,255,.3));
}
.logo-img-footer { height: 56px; mix-blend-mode: screen; }
.nav-list { display: flex; gap: 32px; }
.nav-list a {
  font-size: 15px; font-weight: 700; color: rgba(255,255,255,.75);
  position: relative; padding: 4px 0;
}
.nav-list a::after {
  content: ''; position: absolute; bottom: -2px; left: 50%; width: 0; height: 3px;
  background: var(--gradient); transition: all .25s; border-radius: 2px; transform: translateX(-50%);
}
.nav-list a:hover, .nav-list a.active { color: #fff; }
.nav-list a:hover::after, .nav-list a.active::after { width: 100%; }
.header-right { display: flex; align-items: center; gap: 16px; }
.phone { font-size: 14px; color: rgba(255,255,255,.75); font-weight: 500; }
.phone i { color: var(--orange); margin-right: 4px; }
.mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.mobile-toggle span {
  display: block; width: 24px; height: 2px; background: #fff;
  margin: 5px 0; transition: all .3s;
}

/* ===== Hero ===== */
.hero {
  position: relative; padding: 140px 0 80px;
  background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 30%, #2563EB 60%, #7C3AED 100%);
  overflow: hidden;
}
/* 流光波纹层 */
.hero-bg {
  position: absolute; top: 0; left: 0; right: 0; bottom: 0; overflow: hidden;
}
.hero-bg::before {
  content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background: repeating-linear-gradient(
    45deg, transparent, transparent 100px,
    rgba(255,255,255,.02) 100px, rgba(255,255,255,.02) 200px
  );
  animation: lightStripes 20s linear infinite;
}
@keyframes lightStripes {
  0% { transform: translateX(0) translateY(0); }
  100% { transform: translateX(200px) translateY(-200px); }
}
/* 呼吸光斑 */
.hero-bg::after {
  content: ''; position: absolute; top: -20%; right: -10%; width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(124,58,237,.35) 0%, transparent 70%);
  border-radius: 50%; animation: breathe 6s ease-in-out infinite;
}
@keyframes breathe {
  0%, 100% { transform: scale(1); opacity: .6; }
  50% { transform: scale(1.2); opacity: 1; }
}
/* 第二个光斑 */
.hero::before {
  content: ''; position: absolute; bottom: -15%; left: -8%; width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(37,99,235,.3) 0%, transparent 70%);
  border-radius: 50%; animation: breathe 8s ease-in-out infinite reverse; z-index: 0;
}
/* 流动波纹 */
.hero::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0; height: 80px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 80'%3E%3Cpath fill='%23ffffff' d='M0,50 C240,80 480,20 720,50 C960,80 1200,20 1440,50 L1440,80 L0,80 Z'/%3E%3C/svg%3E") no-repeat bottom;
  background-size: cover; z-index: 1;
}
.hero-inner { display: flex; align-items: center; gap: 60px; position: relative; z-index: 2; }

/* Hero SVG nodes */
.hero-nodes {
  position: absolute; top: 0; right: 0; width: 60%; height: 100%;
  z-index: 0; opacity: .6; pointer-events: none;
}
.node-line {
  stroke: rgba(255,255,255,.12); stroke-width: 1;
  animation: linePulse 4s ease-in-out infinite alternate;
}
.node-line:nth-child(odd) { animation-delay: 1s; }
.node-line:nth-child(3n) { animation-delay: 2s; }
.node-dot { fill: rgba(255,255,255,.5); }
.node-glow {
  fill: rgba(255,255,255,.08);
  animation: glowPulse 3s ease-in-out infinite alternate;
}
.node-glow:nth-child(2) { animation-delay: 1s; }
.node-glow:nth-child(3) { animation-delay: 2s; }
@keyframes linePulse {
  0% { stroke: rgba(255,255,255,.08); }
  100% { stroke: rgba(255,255,255,.2); }
}
@keyframes glowPulse {
  0% { r: 10; fill: rgba(255,255,255,.05); }
  100% { r: 16; fill: rgba(255,255,255,.12); }
}

/* Hero light flares */
.hero-flare {
  position: absolute; border-radius: 50%; pointer-events: none; z-index: 0;
}
.flare-1 {
  top: 10%; right: 15%; width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,.1) 0%, transparent 70%);
  animation: flareDrift 8s ease-in-out infinite alternate;
}
.flare-2 {
  top: 50%; right: 5%; width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(147,197,253,.12) 0%, transparent 70%);
  animation: flareDrift 6s ease-in-out infinite alternate-reverse;
}
@keyframes flareDrift {
  0% { transform: translate(0, 0) scale(1); opacity: .6; }
  50% { transform: translate(-20px, 15px) scale(1.15); opacity: 1; }
  100% { transform: translate(10px, -10px) scale(.9); opacity: .7; }
}
.hero-content { flex: 1; }
.hero-title {
  font-size: 52px; font-weight: 800; line-height: 1.3;
  color: #fff; margin-bottom: 16px; text-shadow: 0 2px 20px rgba(0,0,0,.2);
}
.hero-subtitle {
  font-size: 18px; color: rgba(255,255,255,.85); margin-bottom: 40px;
  display: inline-block; padding: 10px 24px; border-radius: 28px;
  background: rgba(255,255,255,.1);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.hero-stats { display: flex; gap: 40px; }
.stat-item { text-align: center; }
.stat-num { display: block; font-size: 36px; font-weight: 800; color: #fff; }
.stat-num em { font-size: 18px; font-style: normal; }
.stat-label { font-size: 14px; color: rgba(255,255,255,.7); }

/* Hero Form */
.hero-form {
  width: 380px; flex-shrink: 0; background: #fff; border-radius: var(--radius);
  padding: 36px 32px; box-shadow: 0 8px 40px rgba(0,0,0,.2); text-align: center;
  position: relative; z-index: 1;
}
.form-badge {
  font-size: 13px; color: #E53E3E; font-weight: 600; letter-spacing: 2px;
  margin-bottom: 8px;
}
.hero-form h3 {
  font-size: 22px; font-weight: 800; color: var(--gray-900);
  margin-bottom: 28px; line-height: 1.4;
}
.form-phone {
  display: flex; align-items: center; border: 1px solid var(--gray-200);
  border-radius: 8px; overflow: hidden; margin-bottom: 16px;
  background: #fff;
}
.phone-prefix {
  padding: 0 12px; border-right: 1px solid var(--gray-200);
  display: flex; align-items: center; flex-shrink: 0;
}
.phone-prefix select {
  border: none; outline: none; font-size: 14px; color: var(--gray-700);
  background: transparent; cursor: pointer; padding: 12px 0;
}
.form-phone input {
  flex: 1; border: none; outline: none; padding: 12px 16px;
  font-size: 15px; color: var(--gray-700);
}
.form-phone input::placeholder { color: var(--gray-500); }
.btn-red {
  background: linear-gradient(135deg, #E53E3E 0%, #C53030 100%); color: #fff;
  font-size: 18px; font-weight: 700; padding: 14px 28px; border-radius: 28px;
  box-shadow: 0 4px 16px rgba(229,62,62,.3);
}
.btn-red:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(229,62,62,.4); }
.form-agree {
  display: flex; align-items: flex-start; justify-content: center; gap: 6px;
  margin-top: 16px; font-size: 12px; color: var(--gray-500); cursor: pointer;
}
.form-agree input[type="checkbox"] {
  margin-top: 2px; cursor: pointer; accent-color: #E53E3E;
}
.form-agree a { color: var(--blue); }
.form-agree a:hover { text-decoration: underline; }

/* ===== Sections ===== */
.section { padding: 80px 0; position: relative; }
.section:nth-child(even) { background: var(--gradient-light); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 {
  font-size: 32px; font-weight: 800; color: var(--gray-900); margin-bottom: 12px;
  display: inline-block; position: relative;
}
.section-header h2::after {
  content: ''; position: absolute; bottom: -8px; left: 50%; transform: translateX(-50%);
  width: 48px; height: 4px; background: var(--gradient); border-radius: 2px;
}
.section-header p { font-size: 16px; color: var(--gray-500); margin-top: 16px; }

/* ===== Courses ===== */
.course-tabs { display: flex; justify-content: center; gap: 12px; margin-bottom: 36px; }
.tab-btn {
  padding: 10px 32px; border-radius: 28px; border: 2px solid var(--gray-200);
  background: #fff; font-size: 15px; font-weight: 600; color: var(--gray-700);
  cursor: pointer; transition: all .3s;
}
.tab-btn.active, .tab-btn:hover {
  background: var(--gradient); color: #fff; border-color: transparent;
  box-shadow: 0 4px 16px rgba(37,99,235,.3);
}
.course-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}

/* Course panel switching */
.course-panel { display: none; }
.course-panel.active { display: grid; perspective: 1200px; }
.course-panel.active .course-flip-wrapper {
  animation: cardFadeUp .5s ease both;
}
.course-panel.active .course-flip-wrapper:nth-child(1) { animation-delay: 0s; }
.course-panel.active .course-flip-wrapper:nth-child(2) { animation-delay: .08s; }
.course-panel.active .course-flip-wrapper:nth-child(3) { animation-delay: .16s; }
.course-panel.active .course-flip-wrapper:nth-child(4) { animation-delay: .24s; }
.course-panel.active .course-flip-wrapper:nth-child(5) { animation-delay: .32s; }
.course-panel.active .course-flip-wrapper:nth-child(6) { animation-delay: .4s; }
@keyframes cardFadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Course flip cards */
.course-flip-wrapper { height: 300px; }
.course-flip-card {
  position: relative; width: 100%; height: 100%;
  transform-style: preserve-3d; transition: transform .6s cubic-bezier(.4,.2,.2,1);
}
.course-flip-wrapper:hover .course-flip-card { transform: rotateY(180deg); }
.course-front, .course-back {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  border-radius: var(--radius); backface-visibility: hidden; overflow: hidden;
}
.course-front {
  background: #fff; border: 1px solid var(--gray-100); box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column;
}
.course-cover { width: 100%; height: 200px; overflow: hidden; }
.course-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.course-flip-wrapper:hover .course-cover img { transform: scale(1.05); }
.course-text { padding: 16px 20px; text-align: center; }
.course-text h4 { font-size: 18px; font-weight: 800; color: var(--gray-900); margin-bottom: 4px; }
.course-text p { font-size: 13px; color: var(--gray-500); line-height: 1.5; }
.course-back {
  transform: rotateY(180deg); display: flex; flex-direction: column;
  align-items: center; justify-content: center; padding: 32px; text-align: center;
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.3);
}
.course-back h4 { font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 16px; }
.course-back p { font-size: 14px; color: rgba(255,255,255,.9); line-height: 1.8; }
.course-back-blue { background: linear-gradient(135deg, rgba(37,99,235,.88), rgba(30,64,175,.92)); }
.course-back-purple { background: linear-gradient(135deg, rgba(124,58,237,.88), rgba(91,33,182,.92)); }
.course-back-orange { background: linear-gradient(135deg, rgba(245,158,11,.88), rgba(217,119,6,.92)); }
.course-back-green { background: linear-gradient(135deg, rgba(16,185,129,.88), rgba(5,150,105,.92)); }
.course-back-pink { background: linear-gradient(135deg, rgba(236,72,153,.88), rgba(219,39,119,.92)); }
.course-back-cyan { background: linear-gradient(135deg, rgba(6,182,212,.88), rgba(8,145,178,.92)); }

/* ===== Headlines ===== */
.headlines,
.section.headlines:nth-child(even) {
  background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 30%, #2563EB 60%, #7C3AED 100%);
  position: relative; overflow: hidden;
}
/* 背景大图 + 模糊 */
.headlines::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: url('../images/headlines-bg.png') center/cover no-repeat;
  filter: blur(6px); transform: scale(1.05);
  z-index: 0;
}
/* 深色遮罩 */
.headlines::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(15,23,42,.82) 0%, rgba(30,58,138,.75) 50%, rgba(37,99,235,.7) 100%);
  z-index: 0;
}
.headlines .container { position: relative; z-index: 1; }
.headlines .section-header h2 { color: #fff; }
.headlines .section-header h2::after { background: var(--gradient); }
.headlines .section-header p { color: rgba(255,255,255,.6); }

/* 左下角品牌标语 */
.headlines .brand-slogan {
  position: absolute; bottom: 28px; left: 28px; z-index: 1;
  font-size: 14px; color: rgba(255,255,255,.4); font-weight: 500;
  letter-spacing: 2px;
}

/* Headlines layout — box + media side by side */
.headlines .container { display: flex; flex-direction: column; }
.headlines .section-header { width: 100%; }
.headlines-row { display: flex; gap: 24px; }

.headlines-box {
  flex: 1; min-width: 0;
  background: rgba(255,255,255,.95); border-radius: var(--radius); box-shadow: 0 8px 40px rgba(0,0,0,.3);
  padding: 0; overflow: hidden; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.headlines-tabs {
  display: flex; align-items: center; gap: 0; padding: 16px 28px;
  border-bottom: 1px solid var(--gray-100);
}
.hl-tab {
  padding: 6px 18px; border-radius: 20px; border: none; background: transparent;
  font-size: 14px; font-weight: 500; color: var(--gray-500); cursor: pointer;
  transition: all .2s; white-space: nowrap;
}
.hl-tab.active, .hl-tab:hover {
  background: var(--gradient); color: #fff; box-shadow: 0 4px 12px rgba(37,99,235,.25);
}
.hl-more {
  margin-left: auto; font-size: 14px; color: var(--gray-500); white-space: nowrap;
}
.hl-more:hover { color: var(--blue); }
.headlines-content {
  display: flex; padding: 24px 28px; gap: 28px;
}
.headlines-featured { flex-shrink: 0; width: 280px; }
.featured-card {
  width: 100%; height: 100%; min-height: 260px; border-radius: 10px;
  background: linear-gradient(135deg, #1a365d 0%, #2563EB 100%);
  position: relative; overflow: hidden; display: flex; align-items: flex-end;
}
.featured-overlay {
  padding: 24px; color: #fff; position: relative; z-index: 1;
}
.featured-overlay h4 { font-size: 20px; font-weight: 800; margin-bottom: 8px; }
.featured-overlay p { font-size: 13px; color: rgba(255,255,255,.8); margin-bottom: 16px; }
.btn-orange-solid {
  background: var(--orange); color: #fff; padding: 8px 20px;
  border-radius: 20px; font-size: 13px; font-weight: 600;
  display: inline-block; transition: all .2s;
}
.btn-orange-solid:hover { background: var(--orange-dark); }
.headlines-list { flex: 1; display: flex; flex-direction: column; }

/* Headlines horizontal scroll */
.hl-scroll-wrap { overflow: hidden; }
.hl-scroll-inner {
  display: flex; overflow-x: auto; scroll-snap-type: x mandatory;
  scrollbar-width: thin; scrollbar-color: var(--blue) var(--gray-100);
}
.hl-scroll-inner::-webkit-scrollbar { height: 6px; }
.hl-scroll-inner::-webkit-scrollbar-track { background: var(--gray-100); border-radius: 3px; }
.hl-scroll-inner::-webkit-scrollbar-thumb { background: var(--gradient); border-radius: 3px; }
.hl-scroll-col {
  flex: 0 0 100%; scroll-snap-align: start;
  display: flex; flex-direction: column;
}
.hl-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 0; border-bottom: 1px solid var(--gray-100);
  transition: all .2s; gap: 16px;
}
.hl-item:last-child { border-bottom: none; }
.hl-item:hover { padding-left: 8px; }
.hl-item:hover .hl-title { color: var(--blue); }
.hl-title {
  font-size: 14px; color: var(--gray-700); line-height: 1.5;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1;
}
.hl-date { font-size: 13px; color: var(--gray-500); flex-shrink: 0; }

/* Headlines media sidebar — independent card */
.headlines-media {
  width: 280px; flex-shrink: 0;
  background: rgba(255,255,255,.95); border-radius: var(--radius);
  box-shadow: 0 0 20px rgba(37,99,235,.15), 0 0 40px rgba(124,58,237,.1);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  padding: 20px; display: flex; flex-direction: column;
  border: none;
}
.media-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px;
}
.media-header h4 { font-size: 16px; font-weight: 700; color: var(--gray-900); }
.media-more { font-size: 13px; color: var(--gray-500); }
.media-more:hover { color: var(--blue); }
.media-banner { margin-bottom: 14px; }
.media-banner-inner {
  width: 100%; height: 100px; border-radius: 10px;
  background: var(--blue-light);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; color: var(--blue);
}
.media-banner-inner i { font-size: 24px; }
.media-banner-inner span { font-size: 13px; font-weight: 600; }
.media-list { flex: 1; display: flex; flex-direction: column; }

/* Marquee auto-scroll */
.media-list-wrapper {
  flex: 1; overflow: hidden; position: relative;
  max-height: 200px;
}
.media-list-wrapper::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 16px;
  background: linear-gradient(to bottom, rgba(255,255,255,.95), transparent);
  z-index: 1; pointer-events: none;
}
.media-list-wrapper::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 16px;
  background: linear-gradient(to top, rgba(255,255,255,.95), transparent);
  z-index: 1; pointer-events: none;
}
.media-marquee {
  animation: marqueeUp 12s linear infinite;
}
.media-list-wrapper:hover .media-marquee {
  animation-play-state: paused;
}
@keyframes marqueeUp {
  0% { transform: translateY(0); }
  100% { transform: translateY(-50%); }
}
.media-item {
  display: flex; align-items: center; gap: 8px; padding: 8px 0;
  border-bottom: 1px solid var(--gray-100); transition: all .2s;
}
.media-item:last-child { border-bottom: none; }
.media-item:hover { padding-left: 4px; }
.media-item:hover .media-title { color: var(--blue); }
.media-source {
  font-size: 11px; font-weight: 600; color: #fff; white-space: nowrap;
  padding: 2px 6px; background: var(--gradient); border-radius: 4px; flex-shrink: 0;
}
.media-title {
  font-size: 13px; color: var(--gray-700); line-height: 1.4;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1;
}

/* ===== Advantages — Flip + Glow ===== */
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; perspective: 1200px; }
.adv-flip-wrapper { height: 300px; }
.adv-flip-card {
  position: relative; width: 100%; height: 100%;
  transform-style: preserve-3d; transition: transform .6s cubic-bezier(.4,.2,.2,1);
}
.adv-flip-wrapper:hover .adv-flip-card { transform: rotateY(180deg); }

/* Front & Back shared */
.adv-front, .adv-back {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  border-radius: var(--radius); backface-visibility: hidden;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 32px; overflow: hidden;
}

/* Front */
.adv-front { background: #fff; border: 1px solid var(--gray-100); box-shadow: var(--shadow-sm); padding: 0; justify-content: flex-start; }
.adv-img {
  width: 100%; height: 180px; overflow: hidden; border-radius: var(--radius) var(--radius) 0 0;
  position: relative; z-index: 1;
}
.adv-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.adv-flip-wrapper:hover .adv-img img { transform: scale(1.05); }
.adv-text { padding: 16px 20px; text-align: center; position: relative; z-index: 1; }
.adv-text h4 { font-size: 16px; font-weight: 700; color: var(--gray-900); margin-bottom: 6px; }
.adv-text p { font-size: 13px; color: var(--gray-500); line-height: 1.5; }

/* Glow orb */
.adv-glow {
  position: absolute; width: 200px; height: 200px; border-radius: 50%;
  filter: blur(60px); opacity: .35; animation: glowDrift 6s ease-in-out infinite alternate;
  pointer-events: none;
}
.adv-flip-wrapper:hover .adv-glow { opacity: .6; animation-duration: 2s; }
@keyframes glowDrift {
  0% { transform: translate(-30%, -30%) scale(1); }
  50% { transform: translate(30%, 10%) scale(1.2); }
  100% { transform: translate(-10%, 30%) scale(.9); }
}

/* Glow colors */
.adv-glow-blue .adv-glow { background: radial-gradient(circle, rgba(37,99,235,.5), transparent 70%); }
.adv-glow-purple .adv-glow { background: radial-gradient(circle, rgba(124,58,237,.5), transparent 70%); }
.adv-glow-orange .adv-glow { background: radial-gradient(circle, rgba(245,158,11,.5), transparent 70%); }
.adv-glow-green .adv-glow { background: radial-gradient(circle, rgba(16,185,129,.5), transparent 70%); }
.adv-glow-red .adv-glow { background: radial-gradient(circle, rgba(229,62,62,.5), transparent 70%); }
.adv-glow-pink .adv-glow { background: radial-gradient(circle, rgba(236,72,153,.5), transparent 70%); }

/* Back — frosted glass */
.adv-back {
  transform: rotateY(180deg); text-align: center;
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.3);
}
.adv-back h4 { font-size: 18px; font-weight: 800; color: #fff; margin-bottom: 16px; }
.adv-back p { font-size: 14px; color: rgba(255,255,255,.9); line-height: 1.8; }
.adv-glass-blue { background: linear-gradient(135deg, rgba(37,99,235,.85), rgba(30,64,175,.9)); }
.adv-glass-purple { background: linear-gradient(135deg, rgba(124,58,237,.85), rgba(91,33,182,.9)); }
.adv-glass-orange { background: linear-gradient(135deg, rgba(245,158,11,.85), rgba(217,119,6,.9)); }
.adv-glass-green { background: linear-gradient(135deg, rgba(16,185,129,.85), rgba(5,150,105,.9)); }
.adv-glass-red { background: linear-gradient(135deg, rgba(229,62,62,.85), rgba(197,48,48,.9)); }
.adv-glass-pink { background: linear-gradient(135deg, rgba(236,72,153,.85), rgba(219,39,119,.9)); }

/* Scroll entrance */
.adv-flip-wrapper {
  opacity: 0; transform: translateY(30px) rotate(2deg);
  transition: opacity .5s ease, transform .5s ease;
}
.adv-flip-wrapper.in-view { opacity: 1; transform: translateY(0) rotate(0); }

/* ===== Process — Dashboard Grid ===== */
.process-section,
.section.process-section:nth-child(even) {
  background: linear-gradient(135deg, #0C4A6E 0%, #164E63 50%, #0F172A 100%);
  position: relative; overflow: hidden; padding-bottom: 120px;
}
/* 背景大图 + 模糊 */
.process-section .process-bg {
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: url('../images/process-bg.png') center/cover no-repeat;
  filter: blur(3px); transform: scale(1.03);
  z-index: 0;
}
/* 深色遮罩 — 深青蓝色调，底部渐变到浅紫 */
.process-section .process-overlay {
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(to bottom, rgba(12,74,110,.75) 0%, rgba(22,78,99,.7) 40%, rgba(124,58,237,.5) 80%, rgba(167,139,250,.45) 100%);
  z-index: 0;
}
/* Bottom wave — dark over light */
.process-section .wave-bottom {
  position: absolute; bottom: -2px; left: 0; right: 0; width: 100%; height: 80px;
  z-index: 1;
}
.process-section::before {
  content: ''; position: absolute; top: -20%; right: -10%; width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(124,58,237,.3) 0%, transparent 70%);
  border-radius: 50%; animation: breathe 6s ease-in-out infinite;
}
.process-section::after {
  content: ''; position: absolute; bottom: -15%; left: -8%; width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(37,99,235,.25) 0%, transparent 70%);
  border-radius: 50%; animation: breathe 8s ease-in-out infinite reverse;
}
.process-section .section-header h2 { color: #fff; }
.process-section .section-header h2::after { background: var(--gradient); }
.process-section .section-header p { color: rgba(255,255,255,.6); }
.process-section .container { position: relative; z-index: 2; }

/* ===== Process — Immersive Slider ===== */
.step-slider {
  position: relative; z-index: 2; overflow: hidden;
  padding: 0 0 40px;
}
.step-track {
  display: flex; overflow-x: auto; scroll-snap-type: x mandatory;
  scrollbar-width: none; -ms-overflow-style: none;
}
.step-track::-webkit-scrollbar { display: none; }

.step-slide {
  flex: 0 0 80%; max-width: 800px; scroll-snap-align: center;
  display: flex; align-items: center; gap: 32px;
  padding: 24px; margin: 0 10%;
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  position: relative; opacity: .4; transform: scale(.9);
  transition: opacity .5s, transform .5s;
}
.step-slide.active {
  opacity: 1; transform: scale(1);
  background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.18);
  box-shadow: 0 8px 40px rgba(0,0,0,.2);
}

/* Step image */
.step-img {
  width: 240px; height: 180px; flex-shrink: 0; border-radius: 12px;
  overflow: hidden;
}
.step-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .5s;
}
.step-slide.active .step-img img { transform: scale(1.05); }

.step-big-num {
  font-size: 48px; font-weight: 900; line-height: 1; margin-bottom: 8px;
  background: linear-gradient(135deg, rgba(255,255,255,.15), rgba(255,255,255,.05));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; user-select: none;
}
.step-slide.active .step-big-num {
  background: linear-gradient(135deg, rgba(255,255,255,.35), rgba(255,255,255,.15));
  -webkit-background-clip: text; background-clip: text;
}

.step-body { flex: 1; }
.step-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.15);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; color: #fff; margin-bottom: 16px;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.step-body h3 {
  font-size: 24px; font-weight: 800; color: #fff; margin-bottom: 12px;
}
.step-body p {
  font-size: 15px; color: rgba(255,255,255,.7); line-height: 1.8;
}

/* Progress bar + dots */
.step-progress {
  position: relative; z-index: 2; max-width: 500px; margin: 0 auto;
  padding: 0 20px;
}
.step-progress-bar {
  height: 3px; background: rgba(255,255,255,.1); border-radius: 2px;
  margin-bottom: 16px; overflow: hidden;
}
.step-progress-fill {
  height: 100%; width: 20%; border-radius: 2px;
  background: var(--gradient); transition: width .5s ease;
}
.step-dots {
  display: flex; justify-content: space-between;
}
.step-dot {
  width: 36px; height: 36px; border-radius: 50%; border: 2px solid rgba(255,255,255,.2);
  background: transparent; color: rgba(255,255,255,.4);
  font-size: 13px; font-weight: 700; cursor: pointer;
  transition: all .3s; display: flex; align-items: center; justify-content: center;
}
.step-dot.active {
  border-color: #fff; color: #fff;
  background: rgba(255,255,255,.15);
  box-shadow: 0 0 16px rgba(255,255,255,.2);
}

/* ===== News — Magazine Layout ===== */
/* ===== News Compact — Featured + Line List ===== */
.news-compact,
.section.news-compact:nth-child(even) {
  background: #fff;
  position: relative; overflow: hidden;
  padding-top: 40px;
}
.news-compact .container { position: relative; z-index: 1; }

/* 置顶推荐 */
.news-featured { margin-bottom: 32px; }
.news-featured-inner {
  display: flex; gap: 28px; background: #fff; border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--gray-100);
  text-decoration: none; transition: box-shadow .3s;
}
.news-featured-inner:hover { box-shadow: var(--shadow-color); }
.news-featured-img { width: 420px; min-width: 420px; height: 280px; overflow: hidden; }
.news-featured-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.news-featured-inner:hover .news-featured-img img { transform: scale(1.05); }
.news-featured-info {
  padding: 28px 28px 28px 0; display: flex; flex-direction: column; justify-content: center;
}
.news-featured-info .news-tag { display: inline-block; width: fit-content; margin-bottom: 12px; }
.news-featured-info h3 {
  font-size: 22px; font-weight: 800; color: var(--gray-900); line-height: 1.5;
  margin-bottom: 12px; transition: color .2s;
}
.news-featured-inner:hover h3 { color: var(--blue); }
.news-featured-info p {
  font-size: 14px; color: var(--gray-500); line-height: 1.7; margin-bottom: 16px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-featured-date { font-size: 13px; color: var(--blue); font-weight: 500; }
.news-featured-date i { margin-right: 4px; }

/* 文章列表 */
.news-line-list {
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100); overflow: hidden;
}
.news-line-item {
  display: flex; align-items: center; gap: 16px; padding: 18px 24px;
  border-bottom: 1px solid var(--gray-100); text-decoration: none; transition: all .25s;
}
.news-line-item:last-child { border-bottom: none; }
.news-line-item:hover { background: var(--gray-50); }
.news-line-item:hover .news-line-title { color: var(--blue); }
.news-line-bar {
  width: 4px; height: 20px; border-radius: 2px; background: var(--gradient); flex-shrink: 0;
  transition: height .2s;
}
.news-line-item:hover .news-line-bar { height: 28px; }
.news-line-title {
  flex: 1; font-size: 15px; font-weight: 500; color: var(--gray-800); line-height: 1.5;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; transition: color .2s;
}
.news-line-date { font-size: 13px; color: var(--gray-400); flex-shrink: 0; }

/* 双栏列表 */
.news-line-columns {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
}

.news-tabs-bar {
  display: flex; justify-content: center; gap: 10px; margin-bottom: 36px; flex-wrap: wrap;
}
.news-tab {
  padding: 8px 24px; border-radius: 24px; border: 2px solid var(--gray-200);
  background: #fff; font-size: 14px; font-weight: 600; color: var(--gray-700);
  cursor: pointer; transition: all .3s;
}
.news-tab.active, .news-tab:hover {
  background: var(--gradient); color: #fff; border-color: transparent;
  box-shadow: 0 4px 16px rgba(37,99,235,.3);
}
.news-cards {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.news-card {
  display: flex; background: #fff; border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--gray-100);
  transition: all .3s; text-decoration: none;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-color); }
.news-card-img { width: 200px; flex-shrink: 0; overflow: hidden; }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.news-card:hover .news-card-img img { transform: scale(1.05); }
.news-card-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.news-tag {
  display: inline-block; padding: 3px 10px; border-radius: 12px;
  font-size: 12px; font-weight: 600; margin-bottom: 8px; width: fit-content;
}
.tag-primary { background: #EFF6FF; color: var(--blue); }
.tag-junior { background: #EDE9FE; color: var(--purple); }
.tag-senior { background: #FEF3C7; color: var(--orange-dark); }
.tag-method { background: #D1FAE5; color: var(--green); }
.tag-exam { background: #FEE2E2; color: #E53E3E; }
.news-card-body h4 {
  font-size: 15px; font-weight: 700; color: var(--gray-900);
  margin-bottom: 8px; line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-card:hover h4 { color: var(--blue); }
.news-card-body p {
  font-size: 13px; color: var(--gray-500); line-height: 1.6; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-card-date { font-size: 12px; color: var(--gray-500); margin-top: 10px; }
.news-card.hidden { display: none; }

/* ===== About ===== */
.about-inner { display: flex; align-items: center; gap: 60px; }
.about-content { flex: 1; }
.about-content h2 { font-size: 32px; font-weight: 800; margin-bottom: 16px; }
.about-lead { font-size: 17px; color: var(--gray-700); font-weight: 500; margin-bottom: 12px; }
.about-content > p { font-size: 15px; color: var(--gray-500); line-height: 1.8; }
.about-nums { display: flex; gap: 32px; margin-top: 32px; }
.about-num { text-align: center; }
.about-num strong { display: block; font-size: 28px; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.about-num span { font-size: 14px; color: var(--gray-500); }
.about-img { flex-shrink: 0; width: 400px; }
.about-photo {
  width: 100%; height: 300px; object-fit: cover;
  border-radius: var(--radius); display: block;
}
.about-placeholder {
  width: 100%; height: 300px; background: var(--blue-light); border-radius: var(--radius);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 12px; color: var(--blue);
}
.about-placeholder i { font-size: 64px; }
.about-placeholder span { font-size: 18px; font-weight: 600; }

/* 关于提分牛 - 了解更多按钮容器（整个区域居中） */
.about-cta {
  margin-top: 48px;
  display: flex;
  justify-content: center;
  width: 100%;
}

/* ===== CTA Banner ===== */
.cta-banner {
  padding: 80px 0; text-align: center; position: relative; overflow: hidden;
  background: linear-gradient(135deg, #1E3A8A 0%, #2563EB 40%, #7C3AED 100%);
  color: #fff;
}
.cta-banner::before {
  content: ''; position: absolute; top: -50%; right: -20%; width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(255,255,255,.08) 0%, transparent 70%);
  border-radius: 50%; animation: float 7s ease-in-out infinite;
}
.cta-banner h2 { font-size: 32px; font-weight: 800; margin-bottom: 12px; position: relative; }
.cta-banner p { font-size: 16px; color: rgba(255,255,255,.8); margin-bottom: 32px; position: relative; }

/* ===== Footer ===== */
.footer { background: var(--gray-900); color: rgba(255,255,255,.7); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand .logo { margin-bottom: 12px; }
.footer-brand .logo-img-footer { height: 40px; }
.footer-slogan { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer-slogan p { font-size: 14px; margin: 0; line-height: 1; }
.footer-brand > p { font-size: 14px; margin-bottom: 16px; }
.footer-contact p { font-size: 14px; margin-bottom: 6px; }
.footer-contact i { color: var(--blue); margin-right: 6px; width: 16px; }
.footer-links h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 16px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; transition: color .2s; }
.footer-links a:hover { color: var(--blue); }
.footer-qr h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 16px; }
.qr-placeholder {
  width: 120px; height: 120px; background: rgba(255,255,255,.1); border-radius: 8px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; font-size: 12px;
}
.qr-placeholder i { font-size: 32px; color: #07C160; }
.footer-bottom {
  margin-top: 40px; padding: 20px 0; border-top: 1px solid rgba(255,255,255,.1);
  text-align: center; font-size: 13px;
}
.footer-bottom a { color: rgba(255,255,255,.5); }
.footer-bottom a:hover { color: #fff; }

/* ===== Modal ===== */
.modal-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: 2000;
  background: rgba(0,0,0,.5); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity .3s;
}
.modal-overlay.active { opacity: 1; pointer-events: auto; }
.modal-box {
  background: #fff; border-radius: var(--radius); padding: 40px 36px;
  width: 420px; max-width: 90vw; position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
  transform: translateY(20px) scale(.95); transition: transform .3s;
}
.modal-overlay.active .modal-box { transform: translateY(0) scale(1); }
.modal-close {
  position: absolute; top: 16px; right: 16px; width: 32px; height: 32px;
  border: none; background: var(--gray-100); border-radius: 50%;
  font-size: 20px; color: var(--gray-500); cursor: pointer; transition: all .2s;
  display: flex; align-items: center; justify-content: center;
}
.modal-close:hover { background: var(--gray-200); color: var(--gray-900); }
.modal-box h3 {
  font-size: 22px; font-weight: 800; color: var(--gray-900);
  text-align: center; margin-bottom: 8px;
}
.modal-box > p {
  font-size: 14px; color: var(--gray-500); text-align: center; margin-bottom: 24px;
}
.modal-box input[type="text"],
.modal-box input[type="tel"],
.modal-select {
  width: 100%; padding: 12px 16px; border: 1px solid var(--gray-200);
  border-radius: 8px; font-size: 15px; color: var(--gray-700);
  margin-bottom: 14px; outline: none; transition: border-color .2s;
  background: #fff;
}
.modal-box input:focus, .modal-select:focus { border-color: var(--blue); }
.modal-select { appearance: none; cursor: pointer;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236B7280' stroke-width='1.5' fill='none'/%3E%3C/svg%3E") right 14px center no-repeat;
}

/* ===== Side Tools ===== */
.side-tools {
  position: fixed; right: 20px; bottom: 100px; z-index: 999;
  display: flex; flex-direction: column; gap: 8px;
}
.side-btn {
  width: 48px; height: 48px; border-radius: 50%; background: var(--gradient);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 18px; box-shadow: 0 4px 16px rgba(37,99,235,.3); transition: all .3s;
}
.side-btn:hover { transform: scale(1.15); box-shadow: 0 6px 24px rgba(37,99,235,.4); }
.back-top { opacity: 0; pointer-events: none; transition: opacity .3s; }
.back-top.visible { opacity: 1; pointer-events: auto; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-inner { flex-direction: column; text-align: center; }
  .hero-content { order: 1; }
  .hero-form { order: 2; width: 100%; max-width: 420px; }
  .hero-stats { justify-content: center; }
  .news-line-columns { grid-template-columns: 1fr; }
  .news-featured-img { width: 320px; min-width: 320px; height: 220px; }
  .hero-title { font-size: 34px; }
  .course-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); perspective: 800px; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .about-inner { flex-direction: column; }
  .about-img { width: 100%; max-width: 400px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { flex-wrap: wrap; }
  .step-slide { flex: 0 0 90%; margin: 0 5%; padding: 20px; gap: 20px; }
  .step-img { width: 200px; height: 150px; }
  .step-big-num { font-size: 36px; }
  .headlines-content { flex-direction: column; }
  .headlines-featured { width: 100%; }
  .featured-card { min-height: 180px; }
  .headlines-tabs { flex-wrap: wrap; gap: 8px; }
  .headlines-row { flex-direction: column; }
  .headlines-media { width: 100%; }
  .news-cards { grid-template-columns: 1fr; }
  .news-card-img { width: 160px; }
  .news-top-split { flex-direction: column; }
  .news-side-list { width: 100%; }
  .news-bottom-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .nav { display: none; }
  .nav.open {
    display: block; position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--gray-200); padding: 16px 20px;
    box-shadow: var(--shadow);
  }
  .nav.open .nav-list { flex-direction: column; gap: 0; }
  .nav.open .nav-list li { padding: 12px 0; border-bottom: 1px solid var(--gray-100); }
  .mobile-toggle { display: block; }
  .header-right .phone { display: none; }
  .hero { padding: 110px 0 60px; }
  .hero-title { font-size: 28px; }
  .hero-subtitle { font-size: 15px; }
  .hero-stats { gap: 24px; }
  .stat-num { font-size: 28px; }
  .section { padding: 60px 0; }
  .section-header h2 { font-size: 24px; }
  .course-grid, .adv-grid { grid-template-columns: 1fr; }
  .adv-flip-wrapper { height: 240px; }
  .course-flip-wrapper { height: 260px; }
  .footer-grid { grid-template-columns: 1fr; }
  .process-steps { gap: 16px; }
  .step-slide { flex: 0 0 95%; margin: 0 2.5%; padding: 20px; flex-direction: column; gap: 16px; text-align: center; }
  .step-img { width: 100%; height: 160px; }
  .step-big-num { font-size: 32px; }
  .step-body h3 { font-size: 20px; }
  .dash-grid { flex-direction: column; align-items: center; }
  .dash-card { width: 100%; max-width: 300px; }
  .about-nums { gap: 20px; }
}