/* ============================================================
   Aisurance Cloud — main stylesheet
   设计基调：深空蓝 + AWS 暖橙点缀，玻璃拟态 + 细腻动效
   ============================================================ */

:root{
  --bg:#070b16;
  --bg-soft:#0c1426;
  --panel:rgba(255,255,255,.04);
  --panel-line:rgba(255,255,255,.09);
  --ink:#eef2fb;
  --ink-dim:#9aa6c4;
  --ink-faint:#6b779a;
  --brand:#ff9a3c;      /* AWS 暖橙 */
  --brand-2:#ff6a3d;
  --accent:#5cc8ff;     /* 冷蓝高光 */
  --accent-2:#7c8bff;
  --radius:18px;
  --radius-lg:26px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --wrap:1200px;
  --font:'Inter',system-ui,-apple-system,"Segoe UI",sans-serif;
  --display:'Sora','Inter',sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img,svg,canvas{display:block;max-width:100%}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 28px}
.section{padding:120px 0;position:relative}

/* 背景颗粒，降低数字纯净感、增加质感 */
.grain{
  position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode:overlay;
}

/* ---------- 标题块 ---------- */
.sec-head{max-width:720px;margin:0 auto 64px;text-align:center}
.sec-head__tag{
  display:inline-block;font-family:var(--display);font-size:.78rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--brand);margin-bottom:18px;
  padding:6px 14px;border:1px solid rgba(255,154,60,.3);border-radius:99px;
}
.sec-head__title{font-family:var(--display);font-weight:700;font-size:clamp(1.8rem,3.6vw,2.9rem);line-height:1.2;letter-spacing:-.01em}
.sec-head__desc{margin-top:18px;color:var(--ink-dim);font-size:1.05rem}

/* ---------- 按钮 ---------- */
.btn{
  --pad:14px 26px;
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--display);font-weight:600;font-size:.98rem;
  padding:var(--pad);border-radius:99px;cursor:pointer;border:1px solid transparent;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),background .35s,color .35s;
  white-space:nowrap;
}
.btn__arrow{transition:transform .35s var(--ease)}
.btn:hover .btn__arrow{transform:translateX(5px)}
.btn--primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#1a0e02;box-shadow:0 12px 34px -10px rgba(255,122,60,.6)}
.btn--primary:hover{transform:translateY(-3px);box-shadow:0 20px 44px -10px rgba(255,122,60,.7)}
.btn--line{border-color:var(--panel-line);color:var(--ink);background:var(--panel);backdrop-filter:blur(6px)}
.btn--line:hover{border-color:var(--accent);color:#fff;transform:translateY(-3px)}
.btn--ghost{border-color:var(--panel-line);color:var(--ink);padding:11px 20px;font-size:.9rem}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand)}

/* ============================================================
   导航
   ============================================================ */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;transition:background .4s,backdrop-filter .4s,border-color .4s;border-bottom:1px solid transparent}
.nav.is-stuck{background:rgba(7,11,22,.78);backdrop-filter:blur(16px) saturate(140%);border-color:var(--panel-line)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--display);font-weight:700;font-size:1.2rem;letter-spacing:-.01em}
.brand__logo{width:40px;height:40px;border-radius:11px;object-fit:contain;display:block}
.brand__txt em{font-style:normal;color:var(--brand)}
.nav__links{display:flex;gap:34px}
.nav__links a{font-size:.96rem;color:var(--ink-dim);position:relative;padding:6px 0;transition:color .3s}
.nav__links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--brand);transition:width .35s var(--ease)}
.nav__links a:hover{color:var(--ink)}
.nav__links a:hover::after{width:100%}
.nav__burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav__burger span{width:24px;height:2px;background:var(--ink);transition:.3s}

/* ============================================================
   首屏
   ============================================================ */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;padding-top:90px}
.hero__canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.hero__glow{
  position:absolute;z-index:0;width:760px;height:760px;border-radius:50%;top:-200px;right:-160px;
  background:radial-gradient(circle,rgba(255,122,60,.28),transparent 62%);filter:blur(20px);pointer-events:none;
}
.hero__inner{position:relative;z-index:2;max-width:880px}
.hero__eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--display);font-size:.9rem;color:var(--ink-dim);padding:8px 16px;border:1px solid var(--panel-line);border-radius:99px;background:var(--panel);backdrop-filter:blur(8px)}
.hero__eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 0 rgba(255,154,60,.6);animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,154,60,.55)}70%{box-shadow:0 0 0 12px rgba(255,154,60,0)}100%{box-shadow:0 0 0 0 rgba(255,154,60,0)}}
.hero__title{font-family:var(--display);font-weight:800;font-size:clamp(2.6rem,6.4vw,5rem);line-height:1.06;letter-spacing:-.025em;margin:26px 0 0}
.hero__title .grad{background:linear-gradient(110deg,var(--brand),var(--accent) 90%);-webkit-background-clip:text;background-clip:text;color:transparent;padding-left:.12em}
.hero__lead{margin-top:26px;font-size:clamp(1.05rem,1.6vw,1.22rem);color:var(--ink-dim);max-width:620px}
.hero__actions{margin-top:38px;display:flex;gap:16px;flex-wrap:wrap}
.hero__stats{margin-top:64px;display:grid;grid-template-columns:repeat(4,auto);gap:46px;flex-wrap:wrap}
.hero__stats dt{font-family:var(--display);font-weight:800;font-size:clamp(1.9rem,3.4vw,2.7rem);color:#fff;line-height:1}
.hero__stats dd{margin-top:8px;font-size:.92rem;color:var(--ink-faint)}
.hero__scroll{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:2;display:flex;flex-direction:column;align-items:center;gap:8px;font-size:.72rem;letter-spacing:.2em;color:var(--ink-faint);text-transform:uppercase}
.hero__scroll span{width:1px;height:42px;background:linear-gradient(var(--brand),transparent);animation:scrolldown 1.8s var(--ease) infinite}
@keyframes scrolldown{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}50%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ============================================================
   信任条 / 跑马灯
   ============================================================ */
.trust{padding:42px 0;border-top:1px solid var(--panel-line);border-bottom:1px solid var(--panel-line);background:var(--bg-soft);position:relative;z-index:2}
.trust__label{text-align:center;font-size:.82rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:26px}
.trust__marquee{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.trust__marquee ul{display:flex;gap:48px;width:max-content;animation:marquee 32s linear infinite}
.trust__marquee li{font-family:var(--display);font-weight:600;font-size:1.05rem;color:var(--ink-dim);display:flex;align-items:center;gap:48px;white-space:nowrap}
.trust__marquee li::after{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);opacity:.6}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ============================================================
   服务卡片
   ============================================================ */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
  position:relative;padding:34px 30px 30px;border-radius:var(--radius-lg);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.018));
  border:1px solid var(--panel-line);overflow:hidden;
  transition:transform .5s var(--ease),border-color .5s,box-shadow .5s;
}
.card::before{content:"";position:absolute;inset:0;background:radial-gradient(420px circle at var(--mx,50%) var(--my,0%),rgba(255,154,60,.16),transparent 45%);opacity:0;transition:opacity .5s}
.card:hover{transform:translateY(-8px);border-color:rgba(255,154,60,.4);box-shadow:0 26px 60px -28px rgba(0,0,0,.8)}
.card:hover::before{opacity:1}
.card__no{font-family:var(--display);font-weight:800;font-size:.9rem;color:var(--brand);letter-spacing:.1em}
.card h3{font-family:var(--display);font-weight:600;font-size:1.32rem;margin:14px 0 12px}
.card p{color:var(--ink-dim);font-size:.98rem}
.card__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.card__tags li{font-size:.78rem;color:var(--ink-dim);padding:5px 12px;border:1px solid var(--panel-line);border-radius:99px;background:rgba(255,255,255,.03)}

/* ============================================================
   解决方案 tabs
   ============================================================ */
.solset{border:1px solid var(--panel-line);border-radius:var(--radius-lg);overflow:hidden;background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01))}
.solset__tabs{display:flex;flex-wrap:wrap;border-bottom:1px solid var(--panel-line)}
.solset__tab{flex:1;min-width:140px;background:none;border:0;cursor:pointer;color:var(--ink-dim);font-family:var(--display);font-weight:600;font-size:1rem;padding:22px 16px;position:relative;transition:color .3s,background .3s}
.solset__tab:hover{color:var(--ink);background:rgba(255,255,255,.03)}
.solset__tab.is-active{color:#fff}
.solset__tab.is-active::after{content:"";position:absolute;left:18%;right:18%;bottom:0;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.solset__panels{position:relative}
.solset__panel{display:none;grid-template-columns:1.5fr 1fr;gap:40px;padding:52px 46px;align-items:center}
.solset__panel.is-active{display:grid;animation:fade .6s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.solset__copy h3{font-family:var(--display);font-weight:700;font-size:1.7rem;margin-bottom:16px}
.solset__copy p{color:var(--ink-dim);margin-bottom:22px}
.solset__copy ul{display:flex;flex-direction:column;gap:13px}
.solset__copy li{position:relative;padding-left:28px;color:var(--ink)}
.solset__copy li::before{content:"";position:absolute;left:0;top:.55em;width:14px;height:8px;border-left:2px solid var(--brand);border-bottom:2px solid var(--brand);transform:rotate(-45deg)}
.solset__metric{text-align:center;padding:38px 26px;border:1px solid var(--panel-line);border-radius:var(--radius);background:radial-gradient(circle at 50% 0%,rgba(255,154,60,.12),transparent 70%)}
.solset__metric strong{display:block;font-family:var(--display);font-weight:800;font-size:clamp(2.4rem,4vw,3.4rem);background:linear-gradient(120deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.solset__metric span{display:block;margin-top:12px;color:var(--ink-dim);font-size:.92rem}

/* ============================================================
   客户实证
   ============================================================ */
.cases__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.quote{padding:34px 30px;border-radius:var(--radius-lg);border:1px solid var(--panel-line);background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));position:relative;transition:transform .5s var(--ease),border-color .5s}
.quote::before{content:"“";position:absolute;top:8px;right:24px;font-family:Georgia,serif;font-size:5rem;color:rgba(255,154,60,.18);line-height:1}
.quote:hover{transform:translateY(-6px);border-color:rgba(92,200,255,.35)}
.quote blockquote{font-size:1.02rem;color:var(--ink);line-height:1.8}
.quote figcaption{margin-top:22px;display:flex;flex-direction:column;gap:3px;border-top:1px solid var(--panel-line);padding-top:18px}
.quote__who{font-family:var(--display);font-weight:600}
.quote__role{font-size:.85rem;color:var(--ink-faint)}

/* ============================================================
   Why / 资质
   ============================================================ */
.why__inner{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.why__text .sec-head__title{text-align:left}
.why__lead{color:var(--ink-dim);margin:18px 0 30px}
.why__list{display:flex;flex-direction:column;gap:18px}
.why__list li{position:relative;padding-left:26px;color:var(--ink-dim)}
.why__list li strong{display:block;color:var(--ink);font-family:var(--display);font-weight:600;margin-bottom:2px}
.why__list li::before{content:"";position:absolute;left:0;top:.45em;width:11px;height:11px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 0 0 4px rgba(255,154,60,.14)}
.badge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.badge{aspect-ratio:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;border-radius:var(--radius);border:1px solid var(--panel-line);background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.01));transition:transform .4s var(--ease),border-color .4s,background .4s}
.badge:hover{transform:translateY(-5px) scale(1.02);border-color:rgba(255,154,60,.4);background:linear-gradient(160deg,rgba(255,154,60,.14),rgba(255,255,255,.02))}
.badge span{font-family:var(--display);font-weight:800;font-size:1.15rem;color:var(--brand)}
.badge small{color:var(--ink-faint);font-size:.78rem}

/* ============================================================
   流程
   ============================================================ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
.steps li{padding:32px 26px;border-radius:var(--radius-lg);border:1px solid var(--panel-line);background:var(--panel);position:relative;transition:transform .5s var(--ease),border-color .5s}
.steps li:hover{transform:translateY(-6px);border-color:rgba(255,154,60,.35)}
.steps__n{font-family:var(--display);font-weight:800;font-size:2.4rem;background:linear-gradient(160deg,var(--brand),transparent);-webkit-background-clip:text;background-clip:text;color:transparent;opacity:.85}
.steps h3{font-family:var(--display);font-weight:600;font-size:1.28rem;margin:8px 0 10px}
.steps p{color:var(--ink-dim);font-size:.95rem}

/* ============================================================
   关于
   ============================================================ */
.about__inner{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:center}
.about__text .sec-head__title{text-align:left}
.about__text p{color:var(--ink-dim);margin:18px 0}
.about__text .btn{margin-top:14px}
.about__media{display:grid;place-items:center;min-height:340px}
.earth{position:relative;width:min(100%,440px);aspect-ratio:1}
.earth::before{content:"";position:absolute;inset:-10%;border-radius:50%;background:radial-gradient(circle,rgba(92,200,255,.14),rgba(124,139,255,.05) 48%,transparent 72%);filter:blur(10px);pointer-events:none;z-index:0}
.earth__canvas{position:absolute;inset:0;width:100%;height:100%;cursor:grab;touch-action:none;user-select:none;-webkit-user-select:none;z-index:1}
.earth__canvas:active{cursor:grabbing}
.earth__legend{position:absolute;left:0;bottom:0;display:flex;flex-direction:column;gap:7px;font-size:.78rem;color:var(--ink-dim);background:rgba(7,11,22,.4);backdrop-filter:blur(6px);padding:12px 14px;border:1px solid var(--panel-line);border-radius:12px;z-index:2}
.earth__legend li{display:flex;align-items:center;gap:8px}
.earth__legend i{width:9px;height:9px;border-radius:50%;flex:none}
.earth__legend .is-hq{background:var(--brand);box-shadow:0 0 8px 1px rgba(255,154,60,.7)}
.earth__legend .is-branch{background:var(--accent);box-shadow:0 0 8px 1px rgba(92,200,255,.6)}
.earth__legend .is-aws{background:var(--accent-2);opacity:.8}

/* ============================================================
   全球据点
   ============================================================ */
.offices__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.office{padding:34px 28px;border-radius:var(--radius-lg);border:1px solid var(--panel-line);background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));transition:transform .5s var(--ease),border-color .5s,box-shadow .5s}
.office:hover{transform:translateY(-8px);border-color:rgba(255,154,60,.4);box-shadow:0 26px 60px -28px rgba(0,0,0,.8)}
.office__flag{font-size:2.2rem;line-height:1;display:block}
.office h3{font-family:var(--display);font-weight:700;font-size:1.45rem;margin:16px 0 10px;display:flex;align-items:baseline;gap:10px}
.office h3 small{font-family:var(--font);font-weight:400;font-size:.74rem;color:var(--brand);padding:3px 9px;border:1px solid rgba(255,154,60,.32);border-radius:99px}
.office p{color:var(--ink-dim);font-size:.95rem}
.office a{display:inline-block;margin-top:14px;color:var(--accent);font-family:var(--display);font-weight:600;font-size:.95rem;transition:color .3s}
.office a:hover{color:var(--brand)}

/* ============================================================
   CTA / 表单
   ============================================================ */
.cta__inner{max-width:760px;margin:0 auto;text-align:center;padding:62px 48px;border-radius:var(--radius-lg);border:1px solid var(--panel-line);background:radial-gradient(circle at 50% -10%,rgba(255,122,60,.18),transparent 60%),linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.01))}
.cta__inner h2{font-family:var(--display);font-weight:700;font-size:clamp(1.7rem,3.4vw,2.6rem)}
.cta__inner>p{color:var(--ink-dim);margin:16px auto 36px;max-width:520px}
.cta__form{display:grid;grid-template-columns:1fr 1fr;gap:16px;text-align:left}
.field{position:relative}
.field input{width:100%;padding:18px 16px 8px;background:rgba(255,255,255,.04);border:1px solid var(--panel-line);border-radius:12px;color:var(--ink);font-size:1rem;font-family:var(--font);transition:border-color .3s,background .3s}
.field input:focus{outline:none;border-color:var(--brand);background:rgba(255,255,255,.06)}
.field label{position:absolute;left:16px;top:15px;color:var(--ink-faint);font-size:1rem;pointer-events:none;transition:.25s var(--ease)}
.field input:focus+label,.field input:not(:placeholder-shown)+label{top:6px;font-size:.72rem;color:var(--brand)}
.field textarea{width:100%;padding:22px 16px 10px;background:rgba(255,255,255,.04);border:1px solid var(--panel-line);border-radius:12px;color:var(--ink);font-size:1rem;font-family:var(--font);line-height:1.6;resize:vertical;min-height:96px;transition:border-color .3s,background .3s}
.field textarea:focus{outline:none;border-color:var(--brand);background:rgba(255,255,255,.06)}
.field textarea:focus+label,.field textarea:not(:placeholder-shown)+label{top:7px;font-size:.72rem;color:var(--brand)}
.field--full{grid-column:1/-1;position:relative}
.cta__topics{text-align:left}
.cta__topics-q{color:var(--ink-dim);font-size:.95rem;margin-bottom:14px}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{font-family:var(--display);font-weight:500;font-size:.86rem;color:var(--ink-dim);background:rgba(255,255,255,.04);border:1px solid var(--panel-line);border-radius:99px;padding:9px 16px;cursor:pointer;transition:color .3s,background .3s,border-color .3s,transform .3s var(--ease)}
.chip:hover{color:var(--ink);border-color:var(--accent);transform:translateY(-2px)}
.chip.is-on{color:#1a0e02;background:linear-gradient(135deg,var(--brand),var(--brand-2));border-color:transparent}
.cta__submit{grid-column:1/-1;justify-content:center;margin-top:6px}
.cta__hint{grid-column:1/-1;text-align:center;font-size:.9rem;color:var(--accent);min-height:1.2em}

/* ============================================================
   页脚
   ============================================================ */
.foot{border-top:1px solid var(--panel-line);background:var(--bg-soft);padding:72px 0 0;position:relative;z-index:2}
.foot__inner{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:54px}
.foot__brand p{color:var(--ink-faint);font-size:.92rem;margin-top:18px}
.foot__col h4{font-family:var(--display);font-weight:600;font-size:.98rem;margin-bottom:18px;color:var(--ink)}
.foot__col a,.foot__contact span{display:block;color:var(--ink-dim);font-size:.92rem;padding:5px 0;transition:color .3s}
.foot__col a:hover{color:var(--brand)}
.foot__bar{display:flex;justify-content:center;text-align:center;align-items:center;gap:16px;flex-wrap:wrap;border-top:1px solid var(--panel-line);padding-top:24px;padding-bottom:30px;font-size:.84rem;color:var(--ink-faint)}

/* ============================================================
   滚动揭示
   ============================================================ */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============================================================
   键盘可达性：聚焦描边
   ============================================================ */
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.btn:focus-visible{outline-offset:4px}

/* ============================================================
   点击 / 按压反馈
   ============================================================ */
/* 通用水波纹容器：被点元素需 position 非 static + overflow:hidden */
.ripple-host{position:relative;overflow:hidden}
.ripple{position:absolute;border-radius:50%;transform:scale(0);pointer-events:none;
  background:radial-gradient(circle,rgba(255,255,255,.55),rgba(255,255,255,0) 70%);
  animation:ripple .6s var(--ease) forwards;z-index:3}
.btn--line .ripple,.btn--ghost .ripple,.solset__tab .ripple{
  background:radial-gradient(circle,rgba(255,154,60,.45),rgba(255,154,60,0) 70%)}
@keyframes ripple{to{transform:scale(2.4);opacity:0}}

/* 按下时的轻微回弹，制造实体按钮的手感 */
.btn:active{transform:translateY(0) scale(.96)}
.card:active,.office:active,.steps li:active,.badge:active,.quote:active{transform:translateY(-4px) scale(.985)}
.solset__tab:active{transform:scale(.96)}
.nav__links a:active,.foot__col a:active,.office a:active{opacity:.6}

/* 卡片点击时的高光脉冲 */
.card.is-tapped::after,.office.is-tapped::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  box-shadow:0 0 0 2px rgba(255,154,60,.5) inset;animation:tapGlow .5s var(--ease) forwards}
@keyframes tapGlow{from{opacity:1}to{opacity:0}}

@media(prefers-reduced-motion:reduce){
  .ripple{display:none}
  .btn:active,.card:active,.office:active,.steps li:active,.badge:active,.quote:active,.solset__tab:active{transform:none}
}

/* ============================================================
   响应式
   ============================================================ */
@media(max-width:980px){
  .cards,.cases__grid{grid-template-columns:1fr 1fr}
  .offices__grid{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .why__inner,.about__inner{grid-template-columns:1fr;gap:40px}
  .solset__panel{grid-template-columns:1fr;gap:28px}
  .hero__stats{grid-template-columns:1fr 1fr;gap:30px}
  .foot__inner{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .section{padding:84px 0}
  .nav__links{position:fixed;inset:74px 0 auto 0;flex-direction:column;background:rgba(7,11,22,.97);backdrop-filter:blur(16px);padding:24px 28px;gap:4px;border-bottom:1px solid var(--panel-line);transform:translateY(-130%);transition:transform .4s var(--ease)}
  .nav__links.is-open{transform:none}
  .nav__links a{padding:13px 0;font-size:1.05rem}
  .nav__cta{display:none}
  .nav__burger{display:flex}
  .cards,.cases__grid,.steps,.cta__form,.foot__inner{grid-template-columns:1fr}
  .offices__grid{grid-template-columns:1fr}
  .hero__stats{grid-template-columns:1fr 1fr;gap:24px}
  .cta__inner{padding:42px 22px}
  .solset__panel{padding:34px 24px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}