/*
  诗航GEO内容优化系统 - 营销专题页
  全新设计 · 紫色体系 · 大气专业
*/

:root {
  --p900: #3b0f8a;
  --p800: #4c1d95;
  --p700: #5b21b6;
  --p600: #6d28d9;
  --p500: #7c3aed;
  --p400: #8b5cf6;
  --p300: #a78bfa;
  --p200: #c4b5fd;
  --p100: #e9d5ff;
  --p50: #f5f3ff;
  --amber: #f59e0b;
  --amber-light: #fef3c7;
  --gray-900: #1c1917;
  --gray-700: #44403c;
  --gray-500: #78716c;
  --gray-300: #d6d3d1;
  --gray-100: #f5f5f4;
  --white: #ffffff;
  --r: 10px;
  --r-lg: 16px;
  --r-xl: 24px;
  --ease: cubic-bezier(.4,0,.2,1);
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow: 0 4px 24px rgba(0,0,0,.08), 0 1px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 20px 60px rgba(0,0,0,.12), 0 6px 20px rgba(0,0,0,.06);
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color:inherit; text-decoration:none; }
img { max-width:100%; height:auto; display:block; }
.container { width:100%; max-width:1240px; margin:0 auto; padding:0 28px; }

/* ============================================================
   HEADER - 全新设计
   ============================================================ */
.header {
  position: sticky; top:0; z-index:100;
  background: var(--p800);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.header-inner {
  display:flex; align-items:center; justify-content:flex-start;
  height: 64px;
  gap: 24px;
}
.header .logo { display:flex; align-items:center; flex-shrink:0; }
.header .logo img { height: 34px; }
.header-nav {
  display:flex; align-items:center; gap:4px;
  flex-wrap:wrap;
}
.header-nav a {
  color: rgba(255,255,255,.78);
  font-size: 14.5px; font-weight: 500;
  padding: 7px 13px; border-radius: 6px;
  transition: all .25s var(--ease);
  white-space: nowrap;
  letter-spacing: .2px;
}
.header-nav a:hover {
  color: #fff;
  background: rgba(255,255,255,.1);
}
.header-phone {
  margin-left: auto;
  color: #fff;
  font-size: 19px;
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: .3px;
  opacity: .95;
  transition: opacity .2s;
}
.header-phone:hover { opacity: 1; }
.mobile-menu-btn { display:none; color:#fff; font-size:26px; cursor:pointer; line-height:1; }

@media (max-width: 1024px) {
  .header-nav { display:none; }
  .mobile-menu-btn { display:block; }
  .header-phone { display:none; }
}

/* ============================================================
   HERO - 全新非对称布局
   ============================================================ */
.hero {
  background: linear-gradient(155deg, #2e0a6e 0%, var(--p800) 35%, var(--p600) 70%, var(--p500) 100%);
  padding: 100px 0 100px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content:"";
  position:absolute; right: -120px; top: 50%;
  transform: translateY(-50%);
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.04) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content:"";
  position:absolute; left: -60px; bottom: -80px;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,158,11,.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero .container { position:relative; z-index:2; }

.hero-block {
  max-width: 780px;
}
.hero-label {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.9);
  font-size: 13px; font-weight: 600;
  padding: 7px 20px; border-radius: 30px;
  margin-bottom: 32px;
  letter-spacing: .8px;
  text-transform: uppercase;
}
.hero-label::before {
  content:""; width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(245,158,11,.15);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%,100% { box-shadow: 0 0 0 4px rgba(245,158,11,.15); }
  50% { box-shadow: 0 0 0 10px rgba(245,158,11,.05); }
}
.hero h1 {
  font-size: clamp(32px, 4.8vw, 56px);
  font-weight: 900;
  color: #fff;
  line-height: 1.22;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--amber-light), var(--amber));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 18px;
  color: rgba(255,255,255,.65);
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: 36px;
}
.hero-actions {
  display:flex; align-items:center; gap:20px;
  flex-wrap:wrap;
}
.btn-hero {
  display:inline-flex; align-items:center; gap:10px;
  background: var(--amber);
  color: #1c1917;
  font-size: 17px; font-weight: 700;
  padding: 15px 42px; border-radius: 50px;
  letter-spacing: .3px;
  box-shadow: 0 10px 34px rgba(245,158,11,.3);
  transition: all .3s var(--ease);
  cursor:pointer;
}
.btn-hero:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 44px rgba(245,158,11,.4);
}
.hero-demo-note {
  display:flex; align-items:center; gap:10px;
  color: rgba(255,255,255,.55);
  font-size: 14px;
}
.hero-demo-note::before {
  content:""; width:1px; height:20px;
  background: rgba(255,255,255,.2);
}
.hero-demo-note strong { color: rgba(255,255,255,.9); font-weight:600; }

@media (max-width: 768px) {
  .hero { padding: 60px 0 64px; }
  .hero h1 { font-size: 28px; letter-spacing: -.5px; }
  .hero-actions { flex-direction:column; align-items:flex-start; }
  .hero-demo-note::before { display:none; }
}

/* ============================================================
   PRICE - 一价全包大气版
   ============================================================ */
.price-section {
  padding: 100px 0;
  background: linear-gradient(180deg, #ffffff 0%, #f8f7ff 100%);
  position: relative;
}
.price-spine {
  text-align: center;
  margin-bottom: 56px;
}
.price-spine h2 {
  font-size: clamp(24px, 3.2vw, 40px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.5px;
  max-width: 900px;
  margin: 0 auto;
}
.price-spine h2 em {
  font-style: normal;
  color: var(--p500);
}

.price-hero-card {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 380px 1fr;
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(91,33,182,.14), 0 8px 28px rgba(0,0,0,.06);
  background: var(--white);
  border: 1px solid var(--p100);
}

.price-hero-main {
  background: linear-gradient(160deg, var(--p900) 0%, var(--p700) 50%, var(--p500) 100%);
  color: #fff;
  padding: 50px 40px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.price-hero-main::before {
  content: "";
  position: absolute;
  top: -80px; right: -80px;
  width: 260px; height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.08) 0%, transparent 70%);
  pointer-events: none;
}
.price-hero-main::after {
  content: "";
  position: absolute;
  bottom: -60px; left: -60px;
  width: 180px; height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,158,11,.14) 0%, transparent 70%);
  pointer-events: none;
}

.phm-label {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.18);
  font-size: 13px; font-weight: 600;
  padding: 6px 16px; border-radius: 30px;
  letter-spacing: .6px;
  margin-bottom: 18px;
  position: relative; z-index: 1;
}
.phm-label::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(245,158,11,.25);
}
.price-hero-main h3 {
  font-size: 28px; font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  position: relative; z-index: 1;
}
.phm-price {
  display: flex; align-items: baseline; gap: 4px;
  margin-bottom: 14px;
  position: relative; z-index: 1;
}
.phm-price .currency {
  font-size: 28px; font-weight: 700; opacity: .85;
}
.phm-price .amount {
  font-size: 72px; font-weight: 900;
  line-height: 1; letter-spacing: -2px;
  text-shadow: 0 4px 30px rgba(0,0,0,.2);
}
.phm-price .unit {
  font-size: 20px; font-weight: 600; opacity: .8;
}
.phm-note {
  font-size: 14px; color: rgba(255,255,255,.65);
  margin-bottom: 30px;
  position: relative; z-index: 1;
}
.phm-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--amber);
  color: #1c1917;
  font-size: 16px; font-weight: 700;
  padding: 14px 36px; border-radius: 50px;
  letter-spacing: .3px;
  box-shadow: 0 10px 30px rgba(245,158,11,.35);
  transition: all .3s var(--ease);
  position: relative; z-index: 1;
}
.phm-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(245,158,11,.45);
}

.price-hero-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  padding: 34px 30px;
  background: var(--white);
}
.phl-group {
  padding: 0 22px;
  border-right: 1px solid var(--p50);
  transition: all .3s var(--ease);
}
.phl-group:last-child { border-right: none; }
.phl-group:hover { transform: translateY(-4px); }
.phl-head {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 18px;
}
.phl-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.phl-dot.dot-1 { background: var(--p500); box-shadow: 0 0 0 4px rgba(124,58,237,.15); }
.phl-dot.dot-2 { background: var(--amber); box-shadow: 0 0 0 4px rgba(245,158,11,.15); }
.phl-dot.dot-3 { background: #10b981; box-shadow: 0 0 0 4px rgba(16,185,129,.15); }
.phl-head h4 {
  font-size: 17px; font-weight: 700;
  color: var(--gray-900);
}
.phl-group ul { list-style: none; }
.phl-group li {
  display: flex; align-items: center; gap: 10px;
  font-size: 14.5px; color: var(--gray-700);
  padding: 9px 0;
  border-bottom: 1px solid rgba(0,0,0,.03);
}
.phl-group li:last-child { border-bottom: none; }
.phl-group li i {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--p50);
  color: var(--p600);
  font-size: 10px; font-weight: 900;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

@media (max-width: 980px) {
  .price-hero-card { grid-template-columns: 1fr; }
  .price-hero-main { padding: 44px 30px; text-align: center; align-items: center; }
  .price-hero-list { grid-template-columns: repeat(3, 1fr); padding: 30px 20px; }
  .phm-price .amount { font-size: 64px; }
}
@media (max-width: 768px) {
  .price-hero-list { grid-template-columns: 1fr; gap: 28px; padding: 34px 26px; }
  .phl-group { border-right: none; border-bottom: 1px solid var(--p50); padding: 0 0 26px; }
  .phl-group:last-child { border-bottom: none; padding-bottom: 0; }
  .phm-price .amount { font-size: 56px; }
}
@media (max-width: 480px) {
  .price-hero-main { padding: 36px 24px; }
  .price-hero-main h3 { font-size: 24px; }
  .phm-price .amount { font-size: 52px; }
}

/* ============================================================
   SECTION 通用
   ============================================================ */
.section { padding: 100px 0; }
.section-muted { background: var(--p50); }
.section-head { margin-bottom: 56px; text-align:center; }
.section-head .sh-tag {
  display:inline-block; font-size:12.5px; font-weight:700;
  color: var(--p500); letter-spacing:2px; text-transform:uppercase;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 800; line-height: 1.2;
  letter-spacing: -.5px; margin-bottom: 14px;
}
.section-head p {
  font-size: 17px; color: var(--gray-500);
  max-width: 520px; margin:0 auto;
}



/* ============================================================
   WORKFLOW - 新版横向步骤卡 + 箭头
   ============================================================ */

.workflow-zone {
  background: var(--p800);
  padding: 90px 0 100px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.workflow-zone::before {
  content:"";
  position:absolute; top:-100px; right:-100px;
  width:400px; height:400px;
  border-radius:50%;
  background: radial-gradient(circle, rgba(255,255,255,.03) 0%, transparent 70%);
}
.workflow-zone .container { position:relative; z-index:2; }
.workflow-zone .sh-tag { color: rgba(255,255,255,.6); }
.workflow-zone h2 { color:#fff; }
.workflow-zone .section-head p { color: rgba(255,255,255,.55); }

.workflow-steps {
  display: flex;
  align-items: stretch;
  justify-content: center;
  max-width: 1100px;
  margin: 0 auto;
  gap: 0;
}
.step-card {
  flex: 1;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--r-lg);
  padding: 28px 20px 24px;
  text-align: center;
  transition: all .35s var(--ease);
  position: relative;
  backdrop-filter: blur(4px);
}
.step-card:hover {
  background: rgba(255,255,255,.14);
  border-color: rgba(255,255,255,.28);
  transform: translateY(-5px);
  box-shadow: 0 16px 40px rgba(0,0,0,.2);
}
.step-card .step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--amber);
  color: #1c1917;
  font-size: 16px; font-weight: 900;
  margin-bottom: 16px;
  box-shadow: 0 6px 20px rgba(245,158,11,.35);
}
.step-card h4 {
  font-size: 18px; font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}
.step-card p {
  font-size: 14px;
  color: rgba(255,255,255,.55);
  line-height: 1.6;
}
.step-arrow {
  display: flex; align-items: center; justify-content: center;
  width: 48px; flex-shrink: 0;
  font-size: 28px;
  color: rgba(255,255,255,.25);
  font-weight: 300;
}

@media (max-width: 900px) {
  .workflow-steps { flex-wrap: wrap; gap: 16px; }
  .step-card { flex: 1 1 calc(50% - 8px); }
  .step-arrow { display: none; }
}
@media (max-width: 480px) {
  .step-card { flex: 1 1 100%; }
}


/* ============================================================
   FEATURES - 数字序号版
   ============================================================ */
.features-masonry {
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.ft-card {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 30px 24px 28px;
  border: 1px solid var(--gray-300);
  transition: all .3s var(--ease);
  position: relative;
  overflow: hidden;
}
.ft-card::after {
  content:"";
  position:absolute; right:-30px; bottom:-30px;
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--p50);
  transition: all .4s var(--ease);
}
.ft-card:hover::after {
  width: 120px; height: 120px;
  right: -50px; bottom: -50px;
}
.ft-card:hover {
  border-color: var(--p200);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}
.ft-card .ft-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--p100), var(--p50));
  border: 1px solid var(--p200);
  color: var(--p600);
  font-size: 16px; font-weight: 900;
  margin-bottom: 18px;
  position: relative; z-index: 1;
  transition: all .3s var(--ease);
}
.ft-card:hover .ft-num {
  background: linear-gradient(135deg, var(--p600), var(--p500));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 24px rgba(109,40,217,.25);
}
.ft-card h4 {
  font-size: 17px; font-weight: 700;
  margin-bottom: 8px;
  position: relative; z-index: 1;
}
.ft-card p {
  font-size: 14px; color: var(--gray-500);
  line-height: 1.7;
  position: relative; z-index: 1;
}

@media (max-width: 900px) {
  .features-masonry { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .features-masonry { grid-template-columns: 1fr; }
}

/* ============================================================
   SCREENSHOTS - 全新陈列
   ============================================================ */
.screens-gallery {
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.screen-card {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--gray-300);
  background: var(--white);
  transition: all .3s var(--ease);
  box-shadow: var(--shadow-sm);
  position: relative;
}
.screen-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.screen-card img {
  width: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
}
.screen-card .sc-caption {
  padding: 14px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  border-top: 1px solid var(--gray-100);
  text-align: center;
  background: var(--white);
}

@media (max-width: 768px) {
  .screens-gallery { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .screens-gallery { grid-template-columns: 1fr; }
}

/* ============================================================
   NOTICE BAR - 低矮备注条
   ============================================================ */
.notice-bar {
  padding: 18px 0;
  background: var(--gray-100);
  border-top: 1px solid var(--gray-300);
  border-bottom: 1px solid var(--gray-300);
}
.notice-bar .container { max-width: 1100px; }
.notice-content {
  display: flex;
  align-items: center;
  gap: 14px;
}
.notice-tag {
  flex-shrink: 0;
  background: var(--p200);
  color: var(--p800);
  font-size: 11px; font-weight: 700;
  padding: 5px 12px; border-radius: 4px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.notice-content p {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.7;
}
@media (max-width: 768px) {
  .notice-content { flex-direction: column; align-items: flex-start; gap: 8px; }
}


/* ============================================================
   CTA - 全新样式
   ============================================================ */
.cta-band {
  background: linear-gradient(160deg, var(--p900) 0%, var(--p700) 50%, var(--p500) 100%);
  position: relative;
  overflow: hidden;
  padding: 80px 0;
  text-align: center;
}
.cta-band::before {
  content:"";
  position:absolute; top:-120px; left:50%;
  transform: translateX(-50%);
  width:700px; height:700px;
  border-radius:50%;
  background: radial-gradient(circle, rgba(255,255,255,.04) 0%, transparent 70%);
  pointer-events:none;
}
.cta-band .container { position:relative; z-index:2; }
.cta-band h2 {
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: -.5px;
}
.cta-band .cta-sub {
  font-size: 18px;
  color: rgba(255,255,255,.6);
  max-width: 560px;
  margin: 0 auto 34px;
  line-height: 1.7;
}
.cta-band .btn-cta-new {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--amber);
  color: #1c1917;
  font-size: 18px;
  font-weight: 700;
  padding: 18px 50px;
  border-radius: 50px;
  letter-spacing: .5px;
  box-shadow: 0 12px 40px rgba(245,158,11,.28);
  transition: all .3s var(--ease);
}
.cta-band .btn-cta-new:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 52px rgba(245,158,11,.38);
}

/* ============================================================
   FOOTER - 全新版式
   ============================================================ */
.footer {
  background: #0d0a0a;
  color: var(--gray-500);
  padding: 44px 0 36px;
  text-align: center;
  font-size: 13px;
  line-height: 2.2;
}
.footer .footer-row { margin-bottom: 10px; }
.footer .footer-row a {
  color: var(--gray-500);
  margin: 0 12px;
  font-size: 14px;
  transition: color .2s;
}
.footer .footer-row a:hover { color: #fff; }
.footer .footer-copy {
  color: rgba(255,255,255,.25);
  font-size: 12.5px;
  margin-bottom: 4px;
}
.footer .footer-beian {
  color: rgba(255,255,255,.2);
  font-size: 12px;
}
.footer .footer-beian a {
  color: rgba(255,255,255,.2);
  margin: 0 3px;
  transition: color .2s;
}
.footer .footer-beian a:hover { color: rgba(255,255,255,.45); }
.footer .footer-beian img { display:inline-block; vertical-align:middle; margin-right:2px; width:13px; height:13px; }

/* ============================================================
   滚动渐显动画
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: all .6s var(--ease);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   全局响应式
   ============================================================ */
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .container { padding: 0 20px; }
}