/* ================================================
   律量引擎官网 · 样式表
   配色：深海军蓝 × 香槟金 × 象牙白
   设计：全圆角语言 · 移动端优先
   断点：1100 / 980 / 720 / 420
   ================================================ */

:root{
  /* 深色统一主题：海军蓝底 + 象牙白字 + 香槟金强调 */
  --bg:            #0B1B2E;   /* 页面底 */
  --bg-soft:       #0F2235;   /* 略浅的节段底（section-soft） */
  --ink:           #F6F0E1;   /* 主文字（象牙白） */
  --ink-2:         #D8D2C2;   /* 正文副色 */
  --ink-soft:      #9A9381;   /* 弱文字 / 辅助 */
  --line:          rgba(201,169,97,.14);   /* 细金线 */
  --paper:         #132740;   /* 卡片 / 面板底 */
  --gold:          #B48B4F;
  --gold-2:        #C9A961;
  --gold-soft:     #E4D3B0;
  --dark-1:        #0B1B2E;
  --dark-2:        #132740;
  --dark-3:        #071320;

  --font-serif: "Noto Serif SC","Source Han Serif SC","Songti SC","SimSun","STZhongsong",serif;
  --font-sans:  -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-en:    "Cormorant Garamond","Didot","Times New Roman",Georgia,serif;

  --maxw: 1200px;
  --shadow-soft: 0 20px 60px -20px rgba(11,27,46,.18);
  --shadow-card: 0 30px 80px -30px rgba(11,27,46,.35);

  /* 圆角体系（三层，全站统一：小=按钮/QR，中=卡片/框/面板，pill=胶囊） */
  --r-sm:   10px;
  --r-md:   14px;
  --r-pill: 999px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:80px;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-serif);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .3s ease;}
h1,h2,h3{font-family:var(--font-serif);font-weight:500;letter-spacing:.02em;margin:0;}
p{margin:0;}

.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 40px;
}

/* ================================================
   无障碍：Skip link
   ================================================ */
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:1000;
  padding:12px 20px;background:var(--dark-1);color:var(--gold-2);
  font-size:14px;letter-spacing:.1em;border-radius:var(--r-sm);
}
.skip-link:focus{left:12px;top:12px;}

/* ================================================
   导航
   ================================================ */
.nav{
  position:fixed;top:0;left:0;right:0;
  z-index:50;
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  background:rgba(11,27,46,.72);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease;
}
.nav.scrolled{
  background:rgba(11,27,46,.92);
  border-bottom-color:rgba(201,169,97,.18);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:78px;gap:20px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;flex-shrink:0;
  display:inline-block;
}
.brand-mark svg{width:100%;height:100%;display:block;}
.brand-mark.small{width:48px;height:48px;}
.brand-name{
  display:flex;flex-direction:column;line-height:1.15;
  font-family:var(--font-serif);font-size:17px;color:var(--ink);
}
.brand-en{
  font-family:var(--font-en);font-size:10px;
  letter-spacing:.28em;color:var(--ink-soft);margin-top:2px;
}
.nav-links{display:flex;gap:32px;}
.nav-links a{
  font-size:14px;color:var(--ink-2);position:relative;padding:4px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;
  width:0;height:1px;background:var(--gold);
  transition:width .35s ease;
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{width:100%;}

.btn-ghost{
  font-size:13px;letter-spacing:.18em;
  padding:11px 22px;
  border:1px solid var(--ink);color:var(--ink);
  border-radius:var(--r-pill);
  transition:all .3s ease;flex-shrink:0;
}
.btn-ghost:hover{background:var(--ink);color:var(--gold-2);}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  background:transparent;border:1px solid var(--ink);
  border-radius:var(--r-sm);
  cursor:pointer;padding:12px;
  flex-direction:column;justify-content:space-between;
}
.nav-toggle span{
  display:block;width:100%;height:1.6px;background:var(--ink);
  border-radius:2px;
  transition:transform .3s ease,opacity .3s ease;
}
.nav-toggle.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg);}

/* ================================================
   移动端抽屉
   ================================================ */
.drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:82%;max-width:360px;
  background:var(--dark-1);
  transform:translateX(100%);
  transition:transform .4s cubic-bezier(.65,0,.35,1);
  z-index:60;padding:100px 30px 40px;
  overflow-y:auto;
  border-top-left-radius:var(--r-md);
  border-bottom-left-radius:var(--r-md);
}
.drawer.open{transform:none;}
.drawer-inner{display:flex;flex-direction:column;gap:2px;}
.drawer-inner a{
  color:#E8E3D6;font-family:var(--font-serif);
  font-size:20px;padding:18px 0;
  border-bottom:1px solid rgba(201,169,97,.15);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-inner a::after{
  content:"→";font-family:var(--font-en);opacity:.3;
  transition:opacity .3s ease,transform .3s ease;
}
.drawer-inner a:hover::after{opacity:1;transform:translateX(4px);}
.drawer-cta{color:var(--gold-2) !important;margin-top:24px;}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(11,27,46,.6);
  opacity:0;pointer-events:none;
  transition:opacity .4s ease;z-index:55;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}

/* ================================================
   Hero
   ================================================ */
.hero{
  position:relative;min-height:100vh;
  display:flex;flex-direction:column;justify-content:space-between;
  overflow:hidden;color:#E8E3D6;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(180,139,79,.18), transparent 55%),
    radial-gradient(ellipse at 80% 70%, rgba(28,42,61,.6), transparent 50%),
    linear-gradient(160deg,#0B1B2E 0%,#112438 55%,#0B1B2E 100%);
}
.hero-bg{
  position:absolute;inset:0;
  /* 不再用方格纹，改成柔和径向高光，避免与图表网格叠 */
  background:
    radial-gradient(ellipse at 15% 20%, rgba(201,169,97,.08), transparent 40%),
    radial-gradient(ellipse at 85% 80%, rgba(201,169,97,.05), transparent 45%);
  opacity:1;
  pointer-events:none;
}
.hero::before{
  content:"律量引擎";
  position:absolute;right:-40px;bottom:-40px;
  font-family:var(--font-serif);font-size:22vw;line-height:1;
  color:rgba(201,169,97,.04);letter-spacing:.05em;
  pointer-events:none;user-select:none;
}
.hero-inner{
  position:relative;z-index:1;
  padding:120px 40px 80px;
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
  gap:48px;
  max-width:1400px;
  margin:0 auto;
}
/* Web端：侧边布局 */
@media (min-width: 1100px) {
  .hero-inner {
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 80px;
    text-align: left;
    padding: 140px 40px 100px;
  }
  .hero-inner > * {
    flex: 0 0 auto;
  }
}
.hero-text{max-width:640px;}
.hero-visual{width:100%;max-width:480px;}
@media (min-width: 1100px) {
  .hero-visual {
    flex: 0 0 480px;
    max-width: none;
  }
}
.eyebrow{
  font-family:var(--font-en);letter-spacing:.4em;font-size:11px;
  color:var(--gold-2);margin-bottom:0;
  display:inline-flex;align-items:center;gap:14px;
}
.eyebrow::before{content:"";width:32px;height:1px;background:var(--gold);}
.headline{
  font-size:42px;
  line-height:1.25;color:#F6F0E1;font-weight:500;
  letter-spacing:.04em;
}
.headline .gold{color:var(--gold-2);}
.lede{
  margin-top:16px;max-width:480px;
  font-size:15px;line-height:1.85;color:#BFBAAB;
}
.hero-cta{
  display:flex;
  gap:20px;
  flex-wrap:wrap;
  justify-content:center;
  width:100%;
}
/* Web端按钮并排 */
@media (min-width: 1100px) {
  .hero-cta {
    justify-content: flex-start;
    width: auto;
    flex-wrap: nowrap;
    gap: 24px;
  }
}
.btn-primary,.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:16px 32px;font-size:14px;letter-spacing:.15em;
  border-radius:var(--r-pill);
  transition:all .35s ease;cursor:pointer;
  min-height:48px;
  white-space:nowrap;
}
.btn-primary{
  background:var(--gold);color:var(--dark-1);border:1px solid var(--gold);
  flex:1;
}
.btn-primary:hover{
  background:var(--gold-2);
  border-color:var(--gold-2);
  transform:translateY(-3px);
  box-shadow:0 8px 20px rgba(196,139,79,.3);
}
.btn-primary.big{padding:18px 34px;font-size:14px;margin-top:40px;}
.btn-primary-large {
  padding: 16px 36px;
  font-size: 15px;
  min-height: 52px;
}
.btn-primary .arrow,.arrow{transition:transform .3s ease;}
.btn-primary:hover .arrow{transform:translateX(6px);}
.btn-secondary{
  background:rgba(255,255,255,.06);
  color:#E8E3D6;
  border:1px solid rgba(201,169,97,.35);
  flex:1;
}
.btn-secondary:hover{
  border-color:var(--gold-2);
  color:var(--gold-2);
  background:rgba(201,169,97,.12);
  transform:translateY(-3px);
}
.btn-secondary-large {
  padding: 16px 36px;
  font-size: 15px;
  min-height: 52px;
}

.hero-visual{display:flex;align-items:center;justify-content:center;}
.hero-frame{
  width:100%;max-width:480px;aspect-ratio:10/7;
  padding:0;display:grid;place-items:center;
  position:relative;
}
.hero-mark{width:100%;height:100%;}

.scroll-hint{
  position:absolute;bottom:20px;left:50%;transform:translateX(-50%);
  font-family:var(--font-en);font-size:10px;letter-spacing:.4em;
  color:rgba(232,227,214,.55);
  display:flex;flex-direction:column;align-items:center;gap:10px;
}
.scroll-hint span{
  width:1px;height:36px;
  background:linear-gradient(to bottom,var(--gold-2),transparent);
  animation:scroll-pulse 2.2s ease-in-out infinite;
}
@keyframes scroll-pulse{
  0%,100%{transform:scaleY(.4);opacity:.4;transform-origin:top;}
  50%{transform:scaleY(1);opacity:1;transform-origin:top;}
}

/* ================================================
   通用段落
   ================================================ */
.section{padding:140px 0;position:relative;}
.section-dark{
  background:linear-gradient(180deg,var(--dark-1) 0%,var(--dark-2) 100%);
  color:#E8E3D6;
}
.section-soft{background:var(--bg-soft);}
.section-head{max-width:600px;margin:0 auto 72px;text-align:center;}
.section-head h2{
  font-size:30px;line-height:1.3;color:inherit;
  margin-top:14px;
}
.section-head h2 .gold{color:var(--gold);}
.section-dark .section-head h2 .gold{color:var(--gold-2);}
.section-head .sub{
  margin-top:20px;color:var(--ink-soft);font-size:15px;line-height:1.9;
}
.section-dark .section-head .sub{color:#9A9381;}

/* ================================================
   关于我们
   ================================================ */
.about-grid{
  display:grid;grid-template-columns:1fr 1.15fr;gap:80px;
  align-items:center;
}
.about-media{position:relative;}
.about-visual{
  width:100%;aspect-ratio:4/5;overflow:hidden;
  background:var(--dark-1);
  border-radius:var(--r-md);
}
.about-visual svg{width:100%;height:100%;display:block;}
.about-media::before{
  content:"";position:absolute;
  top:24px;left:24px;right:-24px;bottom:-24px;
  border:1px solid var(--gold);z-index:-1;
  border-radius:var(--r-md);
}
.about-badge{
  position:absolute;right:-20px;bottom:30px;
  background:var(--dark-1);color:var(--gold-2);
  padding:20px 28px;min-width:170px;
  box-shadow:var(--shadow-card);
  border:1px solid rgba(201,169,97,.3);
  border-radius:var(--r-md);
}
.badge-year{
  font-family:var(--font-en);font-size:22px;letter-spacing:.1em;color:#F6F0E1;
}
.badge-loc{
  font-family:var(--font-en);font-size:11px;letter-spacing:.32em;
  margin-top:6px;color:var(--gold-2);
}
.about-body p{
  margin:0 0 8px;font-size:16px;line-height:2;color:var(--ink-2);
}
.about-body strong{color:var(--ink);font-weight:600;}
.about-pillars{
  list-style:none;padding:0;margin:32px 0 0;
  border-top:1px solid var(--line);
}
.about-pillars li{
  display:flex;align-items:baseline;gap:20px;
  padding:20px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink-soft);
}
.about-pillars li span{
  font-family:var(--font-en);color:var(--gold);
  font-size:17px;letter-spacing:.15em;flex-shrink:0;min-width:30px;
}
.about-pillars li strong{
  color:var(--ink);font-family:var(--font-serif);
  font-weight:500;font-size:17px;margin-right:18px;display:inline-block;
}

/* ================================================
   服务
   ================================================ */
.services-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.service-card{
  position:relative;padding:36px 28px;
  background:rgba(255,255,255,.03);
  border:1px solid rgba(201,169,97,.18);
  border-radius:var(--r-md);
  transition:all .4s ease;overflow:hidden;
  color:#E8E3D6;
}
.service-card::before{
  content:"";position:absolute;top:0;left:0;
  width:0;height:2px;background:var(--gold-2);
  transition:width .6s ease;
}
.service-card:hover{
  background:rgba(201,169,97,.05);
  border-color:rgba(201,169,97,.4);
  transform:translateY(-4px);
}
.service-card:hover::before{width:100%;}
.service-icon{width:48px;height:48px;color:var(--gold-2);margin-bottom:20px;}
.service-icon svg{width:100%;height:100%;}
.service-no{
  font-family:var(--font-en);font-size:13px;letter-spacing:.3em;
  color:var(--gold-2);margin-bottom:14px;
}
.service-card h3{font-size:20px;color:#F6F0E1;margin-bottom:14px;}
.service-card p{color:#B1AA97;font-size:15px;line-height:1.9;}
.service-card ul{
  list-style:none;padding:0;margin:22px 0 0;
  border-top:1px solid rgba(201,169,97,.15);padding-top:20px;
}
.service-card ul li{
  font-size:13px;color:#9A9381;padding:6px 0;
  padding-left:18px;position:relative;
}
.service-card ul li::before{
  content:"";position:absolute;left:0;top:16px;
  width:8px;height:1px;background:var(--gold);
}

/* ================================================
   方法
   ================================================ */
.method-steps{
  list-style:none;padding:0;margin:0;
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
}
.method-steps li{
  background:rgba(255,255,255,.03);padding:36px 28px;
  border:1px solid rgba(201,169,97,.18);
  border-radius:var(--r-md);
  transition:all .4s ease;
  position:relative;
}
.method-steps li::after{
  content:"→";
  position:absolute;
  right:-14px;top:50%;transform:translate(50%,-50%);
  width:26px;height:26px;
  display:grid;place-items:center;
  font-family:var(--font-en);font-size:15px;line-height:1;
  color:var(--gold-2);
  background:var(--bg);
  border:1px solid rgba(201,169,97,.35);
  border-radius:50%;
  pointer-events:none;
}
.method-steps li:last-child::after{display:none;}
.method-steps li:hover{
  transform:translateY(-4px);
  background:rgba(201,169,97,.05);
  border-color:rgba(201,169,97,.4);
}

/* 方法闭环尾标 */
.method-loop{
  margin:56px auto 0;max-width:520px;
  display:flex;align-items:center;gap:18px;
}
.method-loop .loop-line{
  flex:1;height:1px;
  background:linear-gradient(to right,transparent,rgba(201,169,97,.45),transparent);
}
.method-loop .loop-badge{
  display:inline-flex;align-items:center;gap:12px;
  padding:8px 18px;
  border:1px solid rgba(201,169,97,.35);
  border-radius:var(--r-pill);
  background:rgba(201,169,97,.04);
}
.method-loop .loop-icon{
  width:22px;height:22px;display:grid;place-items:center;
  border:1px solid var(--gold);border-radius:50%;
  color:var(--gold-2);font-size:13px;line-height:1;
}
.method-loop .loop-text{
  font-family:var(--font-serif);font-size:12px;
  color:var(--ink-2);letter-spacing:.22em;
  white-space:nowrap;
}
.step-no{
  font-family:var(--font-en);font-size:40px;color:var(--gold);
  line-height:1;margin-bottom:22px;font-weight:500;
}
.method-steps h3{font-size:20px;color:var(--ink);margin-bottom:12px;}
.method-steps p{font-size:14px;color:var(--ink-soft);line-height:1.9;}
.step-tag{
  display:inline-block;margin-top:18px;
  font-family:var(--font-en);font-size:11px;letter-spacing:.18em;
  color:var(--gold);padding:5px 12px;border:1px solid var(--gold);
  border-radius:var(--r-pill);
}

/* ================================================
   FAQ
   ================================================ */
.faq-container{max-width:880px;margin:0 auto;}
.faq-list{
  display:flex;flex-direction:column;gap:12px;
}
.faq-list details{
  background:rgba(255,255,255,.03);
  border:1px solid rgba(201,169,97,.18);
  border-radius:var(--r-md);
  padding:24px 28px;
  transition:border-color .3s ease,background .3s ease;
}
.faq-list details[open]{
  border-color:rgba(201,169,97,.4);
  background:rgba(201,169,97,.05);
}
.faq-list summary{
  font-family:var(--font-serif);font-size:17px;color:var(--ink);
  cursor:pointer;list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.faq-list summary::-webkit-details-marker{display:none;}
.faq-icon{
  font-family:var(--font-en);font-size:20px;color:var(--gold);
  transition:transform .3s ease;flex-shrink:0;
  width:30px;height:30px;display:grid;place-items:center;
  border:1px solid var(--gold);
  border-radius:50%;
  line-height:1;
}
.faq-list details[open] .faq-icon{transform:rotate(45deg);}
.faq-list details p{
  margin-top:18px;font-size:15px;color:var(--ink-soft);line-height:2;max-width:760px;
}

/* ================================================
   联系
   ================================================ */
.section-contact{
  background:linear-gradient(160deg,var(--dark-1) 0%,#1C2A3D 100%);
  color:#E8E3D6;text-align:center;
  padding:140px 0;position:relative;overflow:hidden;
}
.section-contact::before{
  content:"CONTACT";
  position:absolute;top:50%;left:50%;
  transform:translate(-50%,-50%);
  font-family:var(--font-en);font-size:22vw;
  color:rgba(201,169,97,.04);letter-spacing:.1em;
  pointer-events:none;user-select:none;
}
.contact-inner{position:relative;z-index:1;}
.contact-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  margin:0 auto;max-width:980px;text-align:left;
}
.contact-grid-3{grid-template-columns:repeat(3,1fr);}
.c-card{
  padding:36px 28px;
  border:1px solid rgba(201,169,97,.18);
  background:rgba(255,255,255,.03);
  border-radius:var(--r-md);
  transition:all .4s ease;display:flex;flex-direction:column;
}
.c-card:hover{
  transform:translateY(-4px);
  border-color:rgba(201,169,97,.4);
  background:rgba(201,169,97,.05);
}
.c-label{
  display:block;font-size:11px;letter-spacing:.3em;
  color:var(--gold-2);margin-bottom:14px;font-family:var(--font-en);
  text-transform:uppercase;
}
.c-value{
  font-family:var(--font-serif);font-size:16px;color:#F6F0E1;line-height:1.5;
}
a.c-value:hover{color:var(--gold-2);}
.c-hint{
  margin-top:auto;padding-top:16px;
  font-size:11px;color:#6F6A5D;letter-spacing:.04em;
}
.c-card.wechat{align-items:center;text-align:center;}
.qr-placeholder{
  width:120px;height:120px;margin:8px auto 14px;
  background:#F6F0E1;border:1px solid var(--gold-2);padding:8px;
  border-radius:var(--r-md);
  position:relative;
}
.qr-placeholder::before{
  content:"";position:absolute;inset:4px;
  border-radius:calc(var(--r-md) - 4px);
  background:
    linear-gradient(45deg, transparent 49%, rgba(11,27,46,.08) 49%, rgba(11,27,46,.08) 51%, transparent 51%),
    linear-gradient(-45deg, transparent 49%, rgba(11,27,46,.08) 49%, rgba(11,27,46,.08) 51%, transparent 51%);
  background-size:8px 8px;
}
.qr-inner{
  position:relative;z-index:1;width:100%;height:100%;
  background:#F6F0E1;
  border-radius:calc(var(--r-md) - 4px);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:4px;
}
.qr-inner svg{width:40px;height:40px;}
.qr-inner span{
  font-family:var(--font-serif);font-size:13px;color:#0B1B2E;margin-top:4px;
}
.qr-inner em{
  font-style:normal;font-size:10px;color:#46536A;letter-spacing:.2em;
}

/* ================================================
   页脚（四列）
   ================================================ */
.footer{
  background:var(--dark-3);color:#8A8374;
  padding:72px 0 0;border-top:1px solid rgba(201,169,97,.12);
}
.footer-inner{
  display:grid;grid-template-columns:1.6fr 1fr 1.2fr 1.2fr;gap:48px;
  padding-bottom:48px;
}
.foot-col{display:flex;flex-direction:column;gap:14px;}
.foot-col a,.foot-col span{font-size:13px;color:#8A8374;line-height:1.8;}
.foot-col a:hover{color:var(--gold-2);}
.foot-title{
  font-family:var(--font-en);font-size:11px;letter-spacing:.3em;
  color:var(--gold-2);margin-bottom:4px;text-transform:uppercase;
}
.foot-brand{display:flex;align-items:center;gap:14px;margin-bottom:6px;}
.foot-cn{color:#E8E3D6;font-family:var(--font-serif);font-size:15px;}
.foot-en{font-family:var(--font-en);font-size:11px;letter-spacing:.22em;margin-top:4px;color:#6F6A5D;}
.foot-intro{font-size:13px;color:#6F6A5D;line-height:1.9;margin-top:8px;max-width:420px;}
.foot-hours{color:#6F6A5D !important;font-size:11px !important;}

.footer-bar{
  border-top:1px solid rgba(201,169,97,.1);padding:22px 0;
  font-size:11px;color:#6F6A5D;letter-spacing:.08em;
}
.footer-bar-inner{
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
}

/* ================================================
   滚入动画
   ================================================ */
.reveal{
  opacity:0;transform:translateY(24px);
  transition:opacity .9s ease,transform .9s ease;
}
.reveal.in{opacity:1;transform:none;}
.no-motion .reveal{opacity:1;transform:none;}

/* ================================================
   响应式 · 平板
   ================================================ */
@media (max-width: 1100px){
  .container{padding:0 32px;}
  .services-grid{grid-template-columns:repeat(2,1fr);gap:24px;}
  .service-card{padding:44px 36px;}
  .method-steps{grid-template-columns:repeat(2,1fr);gap:20px;}
  .method-steps li::after{display:none;}
  .method-loop{margin-top:40px;}
  .contact-grid,.contact-grid-3{grid-template-columns:repeat(2,1fr);}
  .footer-inner{grid-template-columns:1fr 1fr;gap:40px;}
}

/* ================================================
   响应式 · 平板/手机过渡
   ================================================ */
@media (max-width: 980px){
  .nav-links{display:none;}
  .btn-ghost{display:none;}
  .nav-toggle{display:flex;}
  .nav-inner{height:68px;}

  .hero-inner{padding:120px 24px 60px;gap:28px;}
  .hero-frame{max-width:none;width:100%;aspect-ratio:10/7;padding:0;}
  .hero::before{font-size:36vw;}

  .about-grid{grid-template-columns:1fr;gap:60px;}
  .about-media::before{display:none;}
  .about-badge{right:20px;bottom:20px;padding:16px 22px;min-width:0;}

  .section,.section-contact{padding:90px 0;}
  .section-head{margin-bottom:50px;}
}

/* ================================================
   响应式 · 手机（H5 主要目标）
   ================================================ */
@media (max-width: 720px){
  .container{padding:0 20px;}
  .section{padding:72px 0;}
  html{scroll-padding-top:70px;}
  body{font-size:15px;line-height:1.7;}

  .headline{font-size:28px;line-height:1.3;letter-spacing:.02em;}
  .lede{font-size:14px;line-height:1.85;}

  .services-grid{grid-template-columns:1fr;gap:16px;}
  .method-steps{grid-template-columns:1fr;gap:12px;}
  .contact-grid,.contact-grid-3{grid-template-columns:1fr;gap:14px;}

  .service-card,.method-steps li,.c-card{padding:32px 24px;border-radius:var(--r-md);}
  .faq-list details{padding:22px 24px;}
  .faq-list{gap:10px;}

  .section-head h2{font-size:26px;line-height:1.35;}
  .about-body h2{font-size:24px;line-height:1.35;}
  .about-body p{font-size:15px;}

  .hero-inner{padding:110px 20px 50px; flex-direction:column !important; text-align:center !important;}
  .hero-frame{max-width:none;width:100%;padding:0;}
  .hero-cta{flex-direction:column;align-items:stretch;gap:14px; width:100%;}
  .btn-primary,.btn-secondary{width:100%;padding:16px 24px;font-size:14px;min-height:52px; flex:none !important;}
  .btn-primary-large, .btn-secondary-large {
    padding: 16px 24px;
    font-size: 14px;
    min-height: 52px;
  }
  .btn-primary.big{padding:17px 28px;}

  .about-badge{right:12px;bottom:12px;padding:14px 18px;}
  .badge-year{font-size:18px;}
  .badge-loc{font-size:10px;}

  .brand-en{display:none;}
  .brand-name{font-size:16px;}

  .faq-list summary{font-size:16px;gap:14px;}
  .faq-list details p{font-size:15px;line-height:1.9;}
  .faq-icon{width:28px;height:28px;font-size:18px;}

  .section-contact{padding:72px 0;}
  .section-contact::before{font-size:40vw;}

  .footer-inner{grid-template-columns:1fr;gap:32px;padding-bottom:40px;}
  .footer-bar-inner{flex-direction:column;align-items:flex-start;gap:8px;}
  .footer{padding-top:56px;}

  .nav-toggle{width:44px;height:44px;}
}

@media (max-width: 420px){
  .headline{font-size:26px;}
  .section-head h2{font-size:22px;}
  .btn-primary,.btn-secondary{padding:14px 20px;font-size:13px;}
  .btn-primary.big{padding:16px 26px;font-size:14px;}
  .hero-frame{max-width:none;width:100%;padding:0;}
  .service-card,.method-steps li,.c-card{padding:26px 20px;}
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  html{scroll-behavior:auto;}
}