/* ==========================================================================
   廊坊行动传媒 · ACTION MEDIA
   深色电影感视觉 / 移动端优先响应式
   ========================================================================== */

:root{
  --bg:        #0B0B0D;
  --bg-2:      #101014;
  --surface:   #16161B;
  --surface-2: #1C1C22;
  --line:      rgba(255,255,255,.08);
  --line-2:    rgba(255,255,255,.14);
  --text:      #F2F2F5;
  --muted:     #9A9AA4;
  --muted-2:   #6E6E78;
  --accent:    #FF5A1F;
  --accent-2:  #FFB020;
  --accent-dim:rgba(255,90,31,.14);

  --radius:    16px;
  --radius-lg: 22px;
  --wrap:      1160px;

  --ease: cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{ box-sizing:border-box; }

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

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB",
              "Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ margin:0; line-height:1.2; letter-spacing:-.02em; }
p{ margin:0; }
button,input,textarea{ font:inherit; color:inherit; }

.wrap{ width:100%; max-width:var(--wrap); margin:0 auto; padding:0 24px; }

/* ============ 顶部导航 ============ */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  transition:background .3s var(--ease), backdrop-filter .3s var(--ease), border-color .3s;
  border-bottom:1px solid transparent;
}
.nav.is-scrolled{
  background:rgba(11,11,13,.82);
  backdrop-filter:blur(14px) saturate(160%);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  border-bottom-color:var(--line);
}
.nav__inner{
  max-width:var(--wrap); margin:0 auto; padding:0 24px;
  height:72px; display:flex; align-items:center; justify-content:space-between; gap:24px;
}

.brand{ display:inline-flex; align-items:center; gap:11px; }
.brand__logo{ height:34px; width:auto; display:block; }
.brand__text{ display:flex; flex-direction:column; line-height:1.05; }
.brand__text strong{ font-size:15px; letter-spacing:.14em; font-weight:800; }
.brand__text em{ font-style:normal; font-size:11px; color:var(--muted); letter-spacing:.24em; margin-top:3px; }

.nav__links{ display:flex; align-items:center; gap:6px; }
.nav__links a{
  font-size:14.5px; color:var(--muted); padding:9px 14px; border-radius:10px;
  transition:color .2s, background .2s;
}
.nav__links a:hover{ color:var(--text); background:rgba(255,255,255,.05); }
.nav__links .nav__cta{
  color:#0B0B0D; font-weight:650; margin-left:8px;
  background:linear-gradient(140deg,var(--accent),#EE4700);
  box-shadow:0 6px 22px rgba(255,90,31,.28);
}
.nav__links .nav__cta:hover{ background:linear-gradient(140deg,#FF6E3A,#FF5A1F); color:#0B0B0D; }

.nav__toggle{
  display:none; width:42px; height:42px; border:1px solid var(--line-2);
  background:rgba(255,255,255,.04); border-radius:11px; cursor:pointer;
  padding:0; place-items:center; gap:5px; flex-direction:column;
}
.nav__toggle span{
  display:block; width:17px; height:1.6px; background:var(--text); border-radius:2px;
  transition:transform .28s var(--ease), opacity .2s;
}
.nav__toggle.is-open span:nth-child(1){ transform:translateY(6.6px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2){ opacity:0; }
.nav__toggle.is-open span:nth-child(3){ transform:translateY(-6.6px) rotate(-45deg); }

/* ============ 首屏 ============ */
.hero{
  position:relative; padding:168px 0 96px; overflow:hidden;
  background:radial-gradient(120% 90% at 50% -10%, #17171D 0%, var(--bg) 58%);
}
.hero__glow{
  position:absolute; top:-320px; left:50%; transform:translateX(-50%);
  width:1000px; height:700px; pointer-events:none;
  background:radial-gradient(circle at 50% 50%, rgba(255,90,31,.20), rgba(255,90,31,0) 62%);
  filter:blur(20px);
}
.hero__grid{
  position:absolute; inset:0; pointer-events:none; opacity:.45;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(120% 80% at 50% 0%, #000 10%, transparent 72%);
  -webkit-mask-image:radial-gradient(120% 80% at 50% 0%, #000 10%, transparent 72%);
}
.hero__inner{ position:relative; z-index:2; }

.hero__pill{
  display:inline-flex; align-items:center; gap:9px;
  padding:7px 15px 7px 11px; border-radius:100px;
  border:1px solid var(--line-2); background:rgba(255,255,255,.04);
  font-size:13.5px; color:#C8C8D0;
}
.hero__pill .dot{
  width:7px; height:7px; border-radius:50%; background:var(--accent);
  box-shadow:0 0 0 4px rgba(255,90,31,.16);
  animation:pulse 2.4s infinite;
}
@keyframes pulse{
  0%,100%{ box-shadow:0 0 0 4px rgba(255,90,31,.16); }
  50%    { box-shadow:0 0 0 8px rgba(255,90,31,.05); }
}

.hero__title{
  margin-top:26px;
  font-size:clamp(46px,8.2vw,92px);
  font-weight:800; letter-spacing:-.035em; line-height:1.04;
}
.hero__title .hl{
  background:linear-gradient(96deg,#FF7A1F 0%,#E8434E 34%,#C13BE0 66%,#4E8DF5 100%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.hero__sub{
  margin-top:26px; max-width:620px;
  font-size:clamp(15px,2vw,18px); color:var(--muted); line-height:1.85;
}
.hero__sub strong{ color:var(--text); font-weight:600; }

.hero__actions{ margin-top:36px; display:flex; flex-wrap:wrap; gap:14px; }

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:9px;
  padding:14px 26px; border-radius:12px; border:1px solid transparent;
  font-size:15px; font-weight:640; cursor:pointer;
  transition:transform .2s var(--ease), box-shadow .25s, background .25s, border-color .25s;
}
.btn svg{ width:17px; height:17px; transition:transform .25s var(--ease); }
.btn:hover{ transform:translateY(-2px); }
.btn--primary{
  background:linear-gradient(140deg,var(--accent),#E84000); color:#0B0B0D;
  box-shadow:0 10px 30px rgba(255,90,31,.30);
}
.btn--primary:hover{ box-shadow:0 14px 38px rgba(255,90,31,.42); }
.btn--primary:hover svg{ transform:translateX(3px); }
.btn--ghost{
  background:rgba(255,255,255,.04); border-color:var(--line-2); color:var(--text);
}
.btn--ghost:hover{ background:rgba(255,255,255,.08); border-color:rgba(255,255,255,.26); }

/* 数据条 */
.hero__stats{
  margin-top:64px; padding-top:34px; border-top:1px solid var(--line);
  display:grid; grid-template-columns:repeat(4,1fr); gap:28px;
}
.stat{ display:flex; flex-direction:column; }
.stat__num{
  font-size:clamp(28px,3.6vw,40px); font-weight:800; letter-spacing:-.03em;
  display:inline; line-height:1;
  font-variant-numeric:tabular-nums; font-feature-settings:"tnum" 1;
}
.stat__unit{ font-size:clamp(16px,2vw,22px); font-weight:700; color:var(--accent); margin-left:2px; }
.stat__label{ margin-top:9px; font-size:13.5px; color:var(--muted-2); }

/* ============ 通用区块 ============ */
.section{ padding:104px 0; position:relative; }
.section--alt{ background:var(--bg-2); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }

.sec-head{ max-width:760px; margin-bottom:56px; }
.sec-head__tag{
  display:inline-block; font-size:12.5px; font-weight:700; letter-spacing:.18em;
  color:var(--accent); text-transform:uppercase; margin-bottom:16px;
}
.sec-head__title{ font-size:clamp(28px,4.4vw,44px); font-weight:750; }
.sec-head__desc{ margin-top:18px; color:var(--muted); font-size:16px; max-width:640px; }

/* ============ 业务卡片 ============ */
.cards{ display:grid; grid-template-columns:repeat(4,1fr); gap:18px; }

.card{
  position:relative; padding:28px 24px 26px; border-radius:var(--radius-lg);
  background:linear-gradient(180deg,var(--surface) 0%,#121216 100%);
  border:1px solid var(--line);
  overflow:hidden;
  transition:transform .35s var(--ease), border-color .35s, box-shadow .35s;
}
.card::after{
  content:""; position:absolute; inset:0; pointer-events:none; opacity:0;
  background:radial-gradient(420px 220px at 50% -10%, rgba(255,90,31,.13), transparent 70%);
  transition:opacity .4s;
}
.card:hover{ transform:translateY(-5px); border-color:rgba(255,90,31,.34); box-shadow:0 22px 50px rgba(0,0,0,.5); }
.card:hover::after{ opacity:1; }

.card__icon{
  width:50px; height:50px; border-radius:14px; display:grid; place-items:center;
  background:var(--accent-dim); border:1px solid rgba(255,90,31,.26); color:var(--accent);
  margin-bottom:22px;
}
.card__icon svg{ width:24px; height:24px; }
.card h3{ font-size:18.5px; font-weight:700; }
.card > p{ margin-top:13px; color:var(--muted); font-size:14.2px; line-height:1.75; }
.card > p strong{ color:#DCDCE2; font-weight:600; }

.card__list{ margin-top:22px; padding-top:20px; border-top:1px solid var(--line); display:grid; gap:10px; }
.card__list li{ position:relative; padding-left:18px; font-size:13.4px; color:#B6B6BF; }
.card__list li::before{
  content:""; position:absolute; left:0; top:9px;
  width:6px; height:6px; border-radius:2px; background:var(--accent); opacity:.85;
}

/* ============ 流程 ============ */
.steps{ display:grid; grid-template-columns:repeat(5,1fr); gap:0; position:relative; }
.steps::before{
  content:""; position:absolute; top:19px; left:4%; right:4%; height:1px;
  background:linear-gradient(90deg,transparent,var(--line-2) 12%,var(--line-2) 88%,transparent);
}
.step{ position:relative; padding:0 18px; text-align:left; }
.step__no{
  display:inline-grid; place-items:center; width:38px; height:38px; border-radius:11px;
  background:var(--bg-2); border:1px solid var(--line-2);
  font-size:13px; font-weight:750; color:var(--accent); letter-spacing:.04em;
  position:relative; z-index:2;
}
.step h4{ margin-top:20px; font-size:16.5px; font-weight:680; }
.step p{ margin-top:10px; font-size:14px; color:var(--muted-2); line-height:1.75; }

/* ============ 案例 ============ */
.cases{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.case{
  border-radius:var(--radius-lg); overflow:hidden; border:1px solid var(--line);
  background:var(--surface); transition:transform .35s var(--ease), border-color .35s, box-shadow .35s;
}
.case:hover{ transform:translateY(-5px); border-color:var(--line-2); box-shadow:0 22px 50px rgba(0,0,0,.5); }

.case__cover{
  height:158px; position:relative; display:flex; align-items:flex-start; padding:16px;
  background:var(--surface-2);
}
.case__cover--a{ background:linear-gradient(135deg,#3A1A08 0%,#1A1208 52%,#241016 100%); }
.case__cover--b{ background:linear-gradient(135deg,#0A2030 0%,#0D1526 55%,#101018 100%); }
.case__cover--c{ background:linear-gradient(135deg,#2B1030 0%,#1A1230 55%,#101018 100%); }
.case__cover::after{
  content:""; position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:28px 28px;
  mask-image:radial-gradient(90% 90% at 20% 20%, #000, transparent 78%);
  -webkit-mask-image:radial-gradient(90% 90% at 20% 20%, #000, transparent 78%);
}
.case__badge{
  position:relative; z-index:2;
  font-size:12px; font-weight:650; letter-spacing:.08em;
  padding:5px 11px; border-radius:7px;
  background:rgba(0,0,0,.42); border:1px solid rgba(255,255,255,.16); color:#E8E8EE;
  backdrop-filter:blur(6px);
}
.case__body{ padding:24px 24px 26px; }
.case__body h4{ font-size:17px; font-weight:680; }
.case__body > p{ margin-top:11px; font-size:14.2px; color:var(--muted); line-height:1.75; }
.case__metrics{
  margin-top:20px; padding-top:18px; border-top:1px solid var(--line);
  display:grid; grid-template-columns:repeat(3,1fr); gap:10px;
}
.case__metrics strong{ display:block; font-size:17px; font-weight:750; color:var(--accent); letter-spacing:-.01em; }
.case__metrics span{ display:block; margin-top:4px; font-size:12px; color:var(--muted-2); }

/* 服务覆盖行业标签 */
.industries{
  margin-top:36px; padding-top:30px; border-top:1px solid var(--line);
  display:flex; gap:22px; align-items:flex-start; flex-wrap:wrap;
}
.industries__label{
  flex:0 0 auto; padding-top:8px;
  font-size:13px; color:var(--muted-2); letter-spacing:.08em;
}
.industries__list{ display:flex; flex-wrap:wrap; gap:10px; }
.industries__list li{
  font-size:13.8px; color:#C2C2CC; padding:7px 15px; border-radius:100px;
  background:rgba(255,255,255,.05); border:1px solid var(--line-2);
  transition:border-color .25s, color .25s, background .25s;
}
.industries__list li:hover{
  color:var(--text); border-color:rgba(255,90,31,.4); background:rgba(255,90,31,.08);
}

/* ============ 为什么选我们 ============ */
.why{ display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:var(--radius-lg); overflow:hidden; }
.why__item{ background:var(--bg-2); padding:34px 32px; transition:background .3s; }
.why__item:hover{ background:#14141A; }
.why__item h4{ font-size:18.5px; font-weight:700; display:flex; align-items:center; gap:12px; }
.why__item h4::before{
  content:""; width:22px; height:2px; border-radius:2px; flex:0 0 22px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
}
.why__item p{ margin-top:13px; color:var(--muted); font-size:14.6px; line-height:1.8; }

/* ============ 联系 ============ */
.contact{ background:radial-gradient(90% 70% at 15% 0%, #17171E 0%, var(--bg) 60%); }
.contact__inner{ display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:start; }
.contact__left h2{ font-size:clamp(26px,3.6vw,38px); font-weight:750; letter-spacing:-.03em; }
.contact__left > p{ margin-top:20px; color:var(--muted); font-size:15.6px; max-width:480px; }

.contact__list{ margin-top:36px; display:grid; gap:22px; }
.contact__list li{ display:flex; gap:15px; align-items:flex-start; }
.contact__ico{
  width:42px; height:42px; flex:0 0 42px; border-radius:12px; display:grid; place-items:center;
  background:rgba(255,255,255,.045); border:1px solid var(--line-2); color:var(--accent);
}
.contact__ico svg{ width:19px; height:19px; }
.contact__list em{ display:block; font-style:normal; font-size:12.5px; color:var(--muted-2); letter-spacing:.05em; margin-bottom:3px; }
.contact__list a, .contact__list > li > div > span{ font-size:16.5px; font-weight:600; }
.contact__list a:hover{ color:var(--accent); }

.copy{
  display:inline-flex; align-items:center; gap:10px;
  background:transparent; border:0; padding:0; cursor:pointer; text-align:left;
}
.copy__text{ font-size:16.5px; font-weight:600; font-family:ui-monospace,SFMono-Regular,Menlo,monospace; }
.copy__hint{
  font-size:11.5px; color:var(--accent); padding:2.5px 8px; border-radius:6px;
  background:var(--accent-dim); border:1px solid rgba(255,90,31,.24);
}
.copy.is-done .copy__hint{ background:rgba(52,199,89,.14); border-color:rgba(52,199,89,.3); color:#4ADE80; }

/* 微信二维码展示位 */
.qr{
  padding:38px 34px 34px; border-radius:var(--radius-lg); text-align:center;
  background:linear-gradient(180deg,var(--surface) 0%,#121216 100%);
  border:1px solid var(--line); box-shadow:0 30px 70px rgba(0,0,0,.42);
}
.qr__box{
  width:min(224px,100%); margin:0 auto; padding:10px;
  border-radius:18px; background:#fff;
  box-shadow:0 10px 30px rgba(0,0,0,.35);
}
.qr__box img{ display:block; width:100%; height:auto; border-radius:10px; }
.qr__title{ margin-top:22px; font-size:17px; font-weight:650; }
.qr__sub{ margin-top:9px; font-size:13px; color:var(--muted-2); }

/* ============ 页脚 ============ */
.footer{ border-top:1px solid var(--line); background:var(--bg-2); padding:56px 0 30px; }
.footer__inner{ display:flex; justify-content:space-between; gap:40px; flex-wrap:wrap; }
.footer__brand p{ margin-top:16px; color:var(--muted-2); font-size:14px; }
.footer__nav{ display:flex; flex-wrap:wrap; gap:8px 26px; align-content:flex-start; }
.footer__nav a{ font-size:14px; color:var(--muted); }
.footer__nav a:hover{ color:var(--accent); }
.footer__bottom{
  margin-top:44px; padding-top:22px; border-top:1px solid var(--line);
  display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
  font-size:13px; color:var(--muted-2);
}

/* ============ 移动端悬浮条 ============ */
.fab{
  display:none; position:fixed; z-index:90; left:16px; right:16px; bottom:14px;
  gap:12px; padding:0;
}
.fab__btn{
  flex:1; display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:50px; border-radius:14px; font-size:15.5px; font-weight:650;
  border:0; cursor:pointer; -webkit-appearance:none; appearance:none;
  box-shadow:0 12px 30px rgba(0,0,0,.5);
}
.fab__btn svg{ width:18px; height:18px; }
.fab__btn--call{ background:rgba(28,28,34,.94); border:1px solid var(--line-2); color:var(--text); backdrop-filter:blur(10px); }
.fab__btn--wx{ background:linear-gradient(140deg,var(--accent),#E84000); color:#0B0B0D; }

/* ============ 滚动入场动画 ============ */
.reveal{ opacity:0; transform:translateY(26px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in{ opacity:1; transform:none; }

@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  .reveal{ opacity:1; transform:none; transition:none; }
  .hero__pill .dot{ animation:none; }
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .cards{ grid-template-columns:repeat(2,1fr); gap:20px; }
}

@media (max-width:1024px){
  .cases{ grid-template-columns:repeat(2,1fr); }
  .cases > .case:last-child{ grid-column:span 2; }
  .steps{ grid-template-columns:repeat(2,1fr); gap:38px 0; }
  .steps::before{ display:none; }
  .contact__inner{ grid-template-columns:1fr; gap:48px; }
  .hero__stats{ grid-template-columns:repeat(2,1fr); gap:32px 24px; }
}

@media (max-width:860px){
  .nav__toggle{ display:flex; }
  .nav__links{
    position:absolute; top:72px; left:16px; right:16px;
    flex-direction:column; align-items:stretch; gap:4px;
    padding:14px; border-radius:18px;
    background:rgba(16,16,20,.97); border:1px solid var(--line-2);
    backdrop-filter:blur(16px);
    box-shadow:0 24px 50px rgba(0,0,0,.55);
    opacity:0; visibility:hidden; transform:translateY(-10px);
    transition:opacity .26s var(--ease), transform .26s var(--ease), visibility .26s;
  }
  .nav__links.is-open{ opacity:1; visibility:visible; transform:none; }
  .nav__links a{ padding:13px 15px; font-size:15.5px; }
  .nav__links .nav__cta{ margin-left:0; text-align:center; }
}

@media (max-width:680px){
  .wrap{ padding:0 20px; }
  .hero{ padding:132px 0 72px; }
  .section{ padding:76px 0; }
  .hero__actions{ gap:12px; }
  .hero__actions .btn{ flex:1 1 auto; }
  .hero__stats{ margin-top:48px; padding-top:28px; }
  .cards, .cases{ grid-template-columns:1fr; gap:18px; }
  .cases > .case:last-child{ grid-column:auto; }
  .industries{ gap:14px; }
  .industries__label{ padding-top:0; }
  .why{ grid-template-columns:1fr; }
  .why__item{ padding:28px 24px; }
  .steps{ grid-template-columns:1fr; gap:30px; }
  .sec-head{ margin-bottom:42px; }
  .qr{ padding:30px 22px 28px; }
  .fab{ display:flex; }
  .footer{ padding-bottom:96px; }
  .contact__list a, .contact__list > li > div > span, .copy__text{ font-size:15.5px; }
}