@charset "utf-8";
@import "page.css";
/* =====================================================================
   小二CMS · SEM 搜索引擎竞价推广  ——  深蓝 · 香槟金 · 高端广告质感
   ===================================================================== */

:root{
  --sem-ink-900:#060a16;
  --sem-ink-850:#081021;
  --sem-ink-800:#0b1428;
  --sem-ink-700:#10203c;
  --sem-blue:#2f6bff;
  --sem-blue-2:#54a4ff;
  --sem-cyan:#3fd0ff;
  --sem-gold:#d8b36a;
  --sem-gold-2:#f0d9a8;
  --sem-gold-3:#faf0d4;
  --sem-gold-deep:#b08a3e;
  --sem-line:rgba(216,179,106,.22);
  --sem-line-soft:rgba(255,255,255,.08);
  --sem-txt:#eaf0fb;
  --sem-txt-dim:rgba(234,240,251,.70);
  --sem-txt-mute:rgba(234,240,251,.42);
  --sem-light:#f6f8fc;
  --sem-light-2:#eef2f9;
  --sem-body:#56607a;
  --sem-ink:#0c1424;
  --sem-r:22px;
  --sem-r-sm:14px;
  --sem-ease:cubic-bezier(.22,.61,.36,1);
  --sem-serif:"Noto Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --sem-sans:"Microsoft YaHei","PingFang SC","Hiragino Sans GB",-apple-system,"Segoe UI",sans-serif;
}

.sem-page{min-height:100vh;background:#fff;overflow:hidden;font-family:var(--sem-sans);color:var(--sem-ink);}
.sem-page *{box-sizing:border-box;}
.sem-page a{text-decoration:none;transition:all .3s var(--sem-ease);}
.sem-box{width:100%;padding:0 clamp(20px,3.2vw,56px);}

.container{max-width:1500px;margin:0 auto;padding:0 clamp(20px,3vw,56px);box-sizing:border-box;width:100%;}
.sem-section{position:relative;padding:clamp(46px,5.5vw,80px) 0;box-sizing:border-box;}

/* 通用进场 */
.sem-reveal{opacity:0;transform:translateY(28px);transition:opacity .85s var(--sem-ease),transform .85s var(--sem-ease);}
.sem-reveal.in{opacity:1;transform:none;}

/* ============================ Hero ============================ */
.sem-hero{position:relative;overflow:hidden;display:flex;align-items:center;min-height:100vh;min-height:100dvh;padding:clamp(120px,15vh,170px) 0 clamp(60px,8vh,100px);
  background:
    radial-gradient(1200px 700px at 82% -10%,rgba(47,107,255,.16),transparent 58%),
    radial-gradient(1000px 620px at -6% 112%,rgba(63,208,255,.12),transparent 55%),
    linear-gradient(180deg,var(--sem-ink-900),var(--sem-ink-800));
  color:var(--sem-txt);}
.sem-hero .sem-box{position:relative;z-index:2;max-width:1520px;margin-inline:auto;}

.sem-hero-bg{position:absolute;inset:0;z-index:1;pointer-events:none;overflow:hidden;}
.sem-hero-grid{position:absolute;inset:0;opacity:.5;
  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:58px 58px;
  mask-image:radial-gradient(1100px 700px at 50% 22%,#000,transparent 80%);-webkit-mask-image:radial-gradient(1100px 700px at 50% 22%,#000,transparent 80%);}
.sem-hero-aurora{position:absolute;border-radius:50%;filter:blur(64px);mix-blend-mode:screen;}
.sem-hero-aurora--a{width:620px;height:620px;right:-150px;top:-210px;background:radial-gradient(circle,rgba(47,107,255,.34),transparent 66%);animation:semFloatA 16s ease-in-out infinite;}
.sem-hero-aurora--b{width:560px;height:560px;left:-170px;bottom:-230px;background:radial-gradient(circle,rgba(63,208,255,.26),transparent 66%);animation:semFloatA 19s ease-in-out infinite reverse;}
@keyframes semFloatA{0%,100%{transform:translate(0,0) scale(1);}50%{transform:translate(30px,26px) scale(1.08);}}

.sem-hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(40px,5vw,90px);align-items:center;}

.sem-badge{display:inline-flex;align-items:center;gap:10px;padding:9px 18px;border-radius:50px;font-size:12.5px;font-weight:600;letter-spacing:.02em;
  color:var(--sem-gold-2);background:linear-gradient(120deg,rgba(216,179,106,.18),rgba(216,179,106,.05));border:1px solid var(--sem-line);margin:28px 0 28px;
  box-shadow:0 8px 24px rgba(0,0,0,.28),inset 0 0 22px rgba(216,179,106,.06);backdrop-filter:blur(6px);}
.sem-badge-dot{width:7px;height:7px;border-radius:50%;background:var(--sem-gold-2);box-shadow:0 0 0 4px rgba(216,179,106,.16);animation:semPulse 1.8s infinite;}
@keyframes semPulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.5;transform:scale(1.35);}}

.sem-hero-title{font-family:var(--sem-serif);font-size:clamp(32px,4.6vw,58px);font-weight:700;line-height:1.22;letter-spacing:-.01em;margin:0 0 24px;color:#fff;text-shadow:0 2px 30px rgba(0,0,0,.35);}
.sem-hl{background:linear-gradient(120deg,var(--sem-gold-3),var(--sem-gold-2) 45%,var(--sem-gold));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.sem-hero-sub{font-size:clamp(15px,1.45vw,19px);font-weight:600;color:var(--sem-txt);margin:0 0 18px;letter-spacing:.2px;}
.sem-hero-desc{font-size:15px;line-height:1.95;color:var(--sem-txt-dim);max-width:540px;margin:0 0 34px;}
.sem-hero-btns{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:38px;}
.sem-hero-stats{display:flex;flex-wrap:wrap;align-items:center;gap:clamp(20px,2.4vw,38px);margin-bottom:28px;}
.sem-stat-div{width:1px;height:40px;background:linear-gradient(180deg,transparent,var(--sem-line-soft),transparent);}
.sem-num{font-family:var(--sem-serif);font-size:clamp(28px,3vw,40px);font-weight:700;color:#fff;line-height:1;display:inline-flex;align-items:baseline;}
.sem-num i{font-style:normal;background:linear-gradient(120deg,var(--sem-gold-3),var(--sem-gold));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.sem-num em{font-style:normal;font-size:.5em;font-weight:700;margin-left:3px;color:var(--sem-gold-2);}
.sem-lab{margin-top:9px;font-size:12.5px;color:var(--sem-txt-mute);letter-spacing:.02em;}

.sem-hero-trust{display:flex;align-items:center;flex-wrap:wrap;gap:14px;padding-top:24px;border-top:1px solid var(--sem-line-soft);margin-bottom:6px;}
.sem-hero-trust-lab{font-size:12px;color:var(--sem-txt-mute);letter-spacing:.04em;}
.sem-hero-trust-list{display:flex;flex-wrap:wrap;gap:10px;}
.sem-hero-trust-list span{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;color:var(--sem-txt-dim);
  padding:7px 13px;border-radius:50px;background:rgba(255,255,255,.04);border:1px solid var(--sem-line-soft);transition:all .3s var(--sem-ease);}
.sem-hero-trust-list span:hover{color:#fff;border-color:var(--sem-line);background:rgba(216,179,106,.08);transform:translateY(-2px);}
.sem-hero-trust-list i{color:var(--sem-gold);}
.sem-disc--left{margin:14px 0 0;max-width:540px;text-align:left;font-size:11.5px;color:var(--sem-txt-mute);letter-spacing:.02em;}

/* Hero 右侧：搜索广告样机 */
.sem-hero-visual{position:relative;justify-self:end;}
.sem-mock-glow{position:absolute;width:460px;height:460px;left:50%;top:50%;transform:translate(-50%,-50%);border-radius:50%;
  background:radial-gradient(circle,rgba(47,107,255,.22),transparent 65%);filter:blur(30px);pointer-events:none;}
.sem-ad-card{position:relative;z-index:2;border-radius:24px;padding:24px;
  background:linear-gradient(160deg,rgba(255,255,255,.10),rgba(255,255,255,.025));
  border:1px solid var(--sem-line-soft);box-shadow:0 50px 100px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.08);backdrop-filter:blur(18px);}
.sem-ad-card::before{content:"";position:absolute;inset:0;border-radius:24px;padding:1px;pointer-events:none;opacity:.65;
  background:linear-gradient(160deg,rgba(216,179,106,.55),transparent 38%,transparent 68%,rgba(63,208,255,.4));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;}
.sem-ad-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--sem-line-soft);margin-bottom:16px;}
.sem-ad-brand{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--sem-gold-2);}
.sem-ad-live{display:inline-flex;align-items:center;gap:6px;font-size:11.5px;color:var(--sem-cyan);}
.sem-ad-live i{width:7px;height:7px;border-radius:50%;background:var(--sem-cyan);box-shadow:0 0 0 4px rgba(63,208,255,.18);animation:semPulse 1.6s infinite;}
.sem-ad-search{display:flex;align-items:center;gap:11px;padding:13px 16px;border-radius:14px;margin-bottom:16px;
  background:rgba(255,255,255,.05);border:1px solid var(--sem-line-soft);font-size:13.5px;color:var(--sem-txt);}
.sem-ad-search>i{color:var(--sem-gold-2);}
.sem-ad-result{display:flex;gap:12px;padding:14px;border-radius:16px;background:rgba(255,255,255,.04);border:1px solid var(--sem-line-soft);margin-bottom:16px;}
.sem-ad-tag{flex-shrink:0;align-self:flex-start;font-size:11px;font-weight:700;color:#fff;background:linear-gradient(120deg,var(--sem-blue),var(--sem-cyan));padding:3px 9px;border-radius:6px;letter-spacing:.04em;}
.sem-ad-title{font-size:15px;font-weight:700;color:#fff;line-height:1.5;margin-bottom:6px;}
.sem-ad-star{color:var(--sem-gold-2);font-style:normal;}
.sem-ad-url{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--sem-cyan);margin-bottom:7px;}
.sem-ad-desc{font-size:12.5px;line-height:1.7;color:var(--sem-txt-dim);}
.sem-ad-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:6px;}
.sem-ad-metrics>div{text-align:center;padding:12px 6px;border-radius:12px;background:rgba(255,255,255,.04);border:1px solid var(--sem-line-soft);}
.sem-ad-metrics b{display:block;font-family:var(--sem-serif);font-size:20px;font-weight:700;color:#fff;line-height:1;}
.sem-ad-metrics b em{font-style:normal;font-size:.55em;margin-left:2px;color:var(--sem-gold-2);}
.sem-ad-metrics span{display:block;margin-top:6px;font-size:11px;color:var(--sem-txt-mute);}
.sem-mock-disc{margin:10px 0 0;font-size:11px;line-height:1.5;color:#8b93a6;text-align:center;letter-spacing:.02em;}
.sem-mock-pill{position:absolute;z-index:3;display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:50px;font-size:13px;font-weight:700;
  color:#fff;background:linear-gradient(120deg,var(--sem-gold-deep),var(--sem-gold));box-shadow:0 18px 40px rgba(0,0,0,.4),inset 0 0 18px rgba(255,255,255,.12);animation:semFloatPill 4s ease-in-out infinite;}
.sem-mock-pill i{color:#fff;opacity:.9;}
.sem-mock-pill--1{top:-22px;left:-26px;}
.sem-mock-pill--2{bottom:-22px;right:-20px;background:linear-gradient(120deg,var(--sem-blue),var(--sem-cyan));animation-delay:1.4s;}
@keyframes semFloatPill{0%,100%{transform:translateY(0);}50%{transform:translateY(-12px);}}

/* ============================ 服务标签导航 ============================ */
.sem-tags{position:relative;z-index:5;}
.sem-tags .container{padding-top:0;padding-bottom:0;}
.sem-tags-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;padding:30px 0 20px;}
.sem-tag{display:inline-flex;align-items:center;padding:11px 22px;border-radius:50px;font-size:14px;font-weight:600;color:var(--sem-body);
  background:var(--sem-light);border:1px solid var(--sem-light-2);transition:all .3s var(--sem-ease);}
.sem-tag:hover{color:var(--sem-ink);border-color:var(--sem-gold);background:rgba(216,179,106,.08);transform:translateY(-2px);}
.sem-tag.active{color:#fff;background:linear-gradient(120deg,var(--sem-ink-800),var(--sem-ink-700));border-color:transparent;box-shadow:0 12px 28px rgba(11,20,40,.22);}

/* ============================ 通用区块头 ============================ */
.sem-head{text-align:center;max-width:760px;margin:0 auto clamp(32px,4vw,48px);}
.sem-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--sem-gold-deep);text-transform:uppercase;margin-bottom:16px;}
.sem-eyebrow::before,.sem-eyebrow::after{content:"";width:26px;height:1px;background:linear-gradient(90deg,transparent,var(--sem-gold));}
.sem-eyebrow::after{background:linear-gradient(90deg,var(--sem-gold),transparent);}
.sem-title{font-family:var(--sem-serif);font-size:clamp(28px,3.6vw,44px);font-weight:700;color:var(--sem-ink);line-height:1.25;margin:0 0 14px;}
.sem-title .sem-hl{background:linear-gradient(120deg,var(--sem-gold-deep),var(--sem-gold));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.sem-sub{font-size:15.5px;color:var(--sem-body);letter-spacing:.02em;}

/* ============================ 核心优势 ============================ */
.sem-advantage{background:var(--sem-light);}
.sem-adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.sem-adv{position:relative;padding:38px 30px;border-radius:var(--sem-r);background:#fff;border:1px solid var(--sem-light-2);overflow:hidden;
  transition:transform .45s var(--sem-ease),box-shadow .45s var(--sem-ease),border-color .45s var(--sem-ease);}
.sem-adv::before{content:"";position:absolute;left:0;top:0;height:3px;width:100%;background:linear-gradient(90deg,var(--sem-gold),var(--sem-blue));transform:scaleX(0);transform-origin:left;transition:transform .45s var(--sem-ease);}
.sem-adv:hover{transform:translateY(-10px);box-shadow:0 30px 60px rgba(11,20,40,.12);border-color:transparent;}
.sem-adv:hover::before{transform:scaleX(1);}
.sem-adv-ic{width:66px;height:66px;border-radius:18px;display:flex;align-items:center;justify-content:center;font-size:28px;color:#fff;margin-bottom:22px;
  background:linear-gradient(135deg,var(--sem-ink-800),var(--sem-ink-700));box-shadow:0 14px 30px rgba(11,20,40,.18);transition:transform .45s var(--sem-ease);}
.sem-adv:hover .sem-adv-ic{transform:rotate(-6deg) scale(1.06);}
.sem-adv-ic i{background:linear-gradient(120deg,var(--sem-gold-2),var(--sem-gold));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.sem-adv h3{font-size:20px;font-weight:700;color:var(--sem-ink);margin:0 0 12px;}
.sem-adv p{font-size:14px;line-height:1.85;color:var(--sem-body);margin:0;}

/* ============================ 服务流程 ============================ */
.sem-flow{background:#fff;}
.sem-flow-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;position:relative;}
.sem-step{position:relative;text-align:center;padding:34px 18px 30px;border-radius:var(--sem-r);background:var(--sem-light);border:1px solid var(--sem-light-2);transition:all .4s var(--sem-ease);}
.sem-step:hover{transform:translateY(-8px);box-shadow:0 24px 50px rgba(11,20,40,.12);border-color:var(--sem-gold);}
.sem-step-no{position:absolute;top:14px;right:18px;font-family:var(--sem-serif);font-size:34px;font-weight:700;color:rgba(11,20,40,.07);line-height:1;}
.sem-step-ic{width:74px;height:74px;margin:0 auto 18px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:30px;color:#fff;position:relative;z-index:1;
  background:linear-gradient(135deg,var(--sem-blue),var(--sem-cyan));box-shadow:0 14px 30px rgba(47,107,255,.28);transition:transform .4s var(--sem-ease);}
.sem-step:hover .sem-step-ic{transform:scale(1.08) translateY(-3px);}
.sem-step h3{font-size:18px;font-weight:700;color:var(--sem-ink);margin:0 0 10px;position:relative;z-index:1;}
.sem-step p{font-size:13px;line-height:1.7;color:var(--sem-body);margin:0;position:relative;z-index:1;}

/* ============================ 数据展示 ============================ */
.sem-data{position:relative;overflow:hidden;color:#fff;
  background:radial-gradient(1200px 700px at 80% 0%,rgba(47,107,255,.20),transparent 60%),linear-gradient(135deg,var(--sem-ink-900),var(--sem-ink-800));}
.sem-data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(20px,3vw,40px);position:relative;z-index:2;}
.sem-data-item{text-align:center;padding:30px 18px;border-radius:var(--sem-r);background:rgba(255,255,255,.04);border:1px solid var(--sem-line-soft);transition:transform .4s var(--sem-ease),background .4s var(--sem-ease);}
.sem-data-item:hover{transform:translateY(-6px);background:rgba(255,255,255,.07);}
.sem-data-ic{width:64px;height:64px;margin:0 auto 18px;border-radius:18px;display:flex;align-items:center;justify-content:center;font-size:26px;color:var(--sem-ink-900);
  background:linear-gradient(135deg,var(--sem-gold-2),var(--sem-gold));box-shadow:0 14px 30px rgba(216,179,106,.28);}
.sem-data-num{font-family:var(--sem-serif);font-size:clamp(38px,4vw,54px);font-weight:700;line-height:1;display:inline-flex;align-items:baseline;}
.sem-data-num i{font-style:normal;background:linear-gradient(120deg,var(--sem-gold-3),var(--sem-gold));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.sem-data-num em{font-style:normal;font-size:.5em;font-weight:700;margin-left:4px;color:var(--sem-gold-2);}
.sem-data-item p{margin:12px 0 0;font-size:15px;color:var(--sem-txt-dim);}
.sem-data-disc{position:relative;z-index:2;text-align:center;margin:34px auto 0;max-width:680px;font-size:12px;color:var(--sem-txt-mute);letter-spacing:.02em;}

/* ============================ 服务平台 ============================ */
.sem-platform{background:var(--sem-light);}
.sem-plat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.sem-plat{position:relative;padding:40px 28px;border-radius:var(--sem-r);background:#fff;border:1px solid var(--sem-light-2);text-align:center;overflow:hidden;transition:all .45s var(--sem-ease);}
.sem-plat:hover{transform:translateY(-10px);box-shadow:0 30px 60px rgba(11,20,40,.12);border-color:var(--sem-gold);}
.sem-plat-ic{width:84px;height:84px;margin:0 auto 22px;border-radius:24px;display:flex;align-items:center;justify-content:center;font-size:36px;color:#fff;
  background:linear-gradient(135deg,var(--sem-ink-800),var(--sem-ink-700));box-shadow:0 16px 34px rgba(11,20,40,.18);transition:transform .45s var(--sem-ease);}
.sem-plat:hover .sem-plat-ic{transform:translateY(-4px) rotate(-5deg);}
.sem-plat-ic i{background:linear-gradient(120deg,var(--sem-gold-2),var(--sem-gold));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
/* 百度熊掌图标（all.min.css 无 fa-baidu，改用内联 SVG，沿用金色） */
.baidu-paw{display:inline-block;vertical-align:-.15em;width:1em;height:1em;}
.sem-plat-ic .baidu-paw{width:42px;height:42px;color:var(--sem-gold);}
.sem-hero-trust .baidu-paw{color:var(--sem-gold-2);}
.sem-plat h3{font-size:20px;font-weight:700;color:var(--sem-ink);margin:0 0 10px;}
.sem-plat p{font-size:13.5px;line-height:1.75;color:var(--sem-body);margin:0;}

/* ============================ 成功案例 ============================ */
/* ============================ 为什么选择 ============================ */
.sem-why{position:relative;overflow:hidden;color:#fff;
  background:radial-gradient(1100px 640px at 12% 100%,rgba(63,208,255,.14),transparent 55%),linear-gradient(135deg,var(--sem-ink-900),var(--sem-ink-800));}
.sem-why-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(40px,5vw,80px);align-items:center;position:relative;z-index:2;}
.sem-why-title{font-family:var(--sem-serif);font-size:clamp(28px,3.6vw,42px);font-weight:700;color:#fff;margin:0 0 14px;line-height:1.25;}
.sem-why-sub{font-size:15.5px;color:var(--sem-txt-dim);margin:0 0 34px;line-height:1.7;}
.sem-why-list{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.sem-why-item{display:flex;align-items:flex-start;gap:16px;padding:20px;border-radius:var(--sem-r-sm);background:rgba(255,255,255,.045);border:1px solid var(--sem-line-soft);transition:all .4s var(--sem-ease);}
.sem-why-item:hover{transform:translateX(6px);background:rgba(255,255,255,.07);border-color:var(--sem-line);}
.sem-why-ic{flex-shrink:0;width:46px;height:46px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-size:19px;color:var(--sem-ink-900);
  background:linear-gradient(135deg,var(--sem-gold-2),var(--sem-gold));box-shadow:0 12px 26px rgba(216,179,106,.26);}
.sem-why-item h3{font-size:16.5px;font-weight:700;color:#fff;margin:0 0 6px;}
.sem-why-item p{font-size:13px;line-height:1.65;color:var(--sem-txt-dim);margin:0;}
.sem-why-visual{position:relative;height:440px;display:flex;align-items:center;justify-content:center;}
.sem-why-ring{position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,.12);}
.sem-why-ring.r1{width:380px;height:380px;animation:semSpin 26s linear infinite;}
.sem-why-ring.r2{width:300px;height:300px;animation:semSpin 20s linear infinite reverse;}
.sem-why-ring.r3{width:220px;height:220px;animation:semSpin 14s linear infinite;}
@keyframes semSpin{to{transform:rotate(360deg);}}
.sem-why-core{position:relative;z-index:2;width:160px;height:160px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;color:#fff;text-align:center;
  background:linear-gradient(135deg,var(--sem-blue),var(--sem-cyan));box-shadow:0 30px 70px rgba(47,107,255,.4);animation:semFloatPill 5s ease-in-out infinite;}
.sem-why-core i{font-size:46px;}
.sem-why-core b{font-family:var(--sem-serif);font-size:22px;font-weight:700;}
.sem-why-core span{font-size:12px;color:rgba(255,255,255,.85);}

/* ============================ FAQ ============================ */
.sem-faq{background:var(--sem-light);}
.sem-faq-list{max-width:920px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.sem-faq details{border-radius:var(--sem-r-sm);background:#fff;border:1px solid var(--sem-light-2);overflow:hidden;transition:all .35s var(--sem-ease);}
.sem-faq details[open]{box-shadow:0 18px 40px rgba(11,20,40,.10);border-color:var(--sem-gold);}
.sem-faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 26px;font-size:16.5px;font-weight:600;color:var(--sem-ink);}
.sem-faq summary::-webkit-details-marker{display:none;}
.sem-faq summary i.fa-chevron-down{color:var(--sem-gold-deep);transition:transform .35s var(--sem-ease);}
.sem-faq details[open] summary i.fa-chevron-down{transform:rotate(180deg);}
.sem-faq-a{padding:0 26px 22px;font-size:14px;line-height:1.9;color:var(--sem-body);}

/* ============================ CTA ============================ */
.sem-cta{position:relative;overflow:hidden;padding:clamp(52px,6vw,84px) 0;color:#fff;
  background:radial-gradient(1200px 700px at 50% -20%,rgba(216,179,106,.18),transparent 60%),linear-gradient(135deg,var(--sem-ink-900),var(--sem-ink-800));}
.sem-cta-bg{position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.6;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:60px 60px;
  mask-image:radial-gradient(900px 500px at 50% 40%,#000,transparent 78%);-webkit-mask-image:radial-gradient(900px 500px at 50% 40%,#000,transparent 78%);}
.sem-cta-inner{position:relative;z-index:2;text-align:center;max-width:900px;margin:0 auto;}
.sem-cta-badge{display:inline-flex;align-items:center;gap:9px;padding:8px 18px;border-radius:50px;font-size:12.5px;font-weight:600;color:var(--sem-gold-2);
  background:linear-gradient(120deg,rgba(216,179,106,.18),rgba(216,179,106,.05));border:1px solid var(--sem-line);margin-bottom:24px;}
.sem-cta-title{font-family:var(--sem-serif);font-size:clamp(28px,4vw,46px);font-weight:700;margin:0 0 18px;color:#fff;line-height:1.3;}
.sem-cta-desc{font-size:16px;line-height:1.9;color:var(--sem-txt-dim);margin:0 0 34px;}
.sem-cta-acts{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-bottom:30px;}
.sem-cta-contact{display:flex;flex-wrap:wrap;gap:14px 34px;justify-content:center;font-size:15px;color:var(--sem-txt-dim);}
.sem-cta-contact a,.sem-cta-contact span{display:inline-flex;align-items:center;gap:10px;}
.sem-cta-contact i{color:var(--sem-gold-2);}

/* 按钮 */
.sem-btn{display:inline-flex;align-items:center;gap:10px;padding:15px 34px;font-size:15.5px;font-weight:700;border-radius:50px;cursor:pointer;border:none;
  transition:all .3s var(--sem-ease);}
.sem-btn-gold{color:var(--sem-ink-900);background:linear-gradient(120deg,var(--sem-gold-3),var(--sem-gold));box-shadow:0 14px 34px rgba(216,179,106,.36);}
.sem-btn-gold:hover{transform:translateY(-3px);box-shadow:0 20px 44px rgba(216,179,106,.46);}
.sem-btn-ghost{color:#fff;background:rgba(255,255,255,.06);border:1px solid var(--sem-line-soft);}
.sem-btn-ghost:hover{transform:translateY(-3px);background:rgba(255,255,255,.12);border-color:var(--sem-line);}
.sem-btn-blue{color:#fff;background:linear-gradient(120deg,var(--sem-blue),var(--sem-cyan));box-shadow:0 14px 34px rgba(47,107,255,.34);}
.sem-btn-blue:hover{transform:translateY(-3px);box-shadow:0 20px 44px rgba(47,107,255,.44);}

/* ============================ 响应式 ============================ */
@media (max-width:1100px){
  .sem-hero{display:block;min-height:100vh;min-height:100dvh;padding:clamp(110px,13vh,150px) 0 70px;}
  .sem-hero-inner{grid-template-columns:1fr;gap:52px;}
  .sem-hero-visual{max-width:520px;margin:0 auto;width:100%;justify-self:stretch;}
  .sem-why-inner{grid-template-columns:1fr;gap:48px;}
  .sem-why-visual{max-width:380px;margin:0 auto;height:360px;}
  .sem-adv-grid,.sem-plat-grid,.sem-data-grid{grid-template-columns:repeat(2,1fr);}
  .sem-flow-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:768px){
  .sem-hero-stats{gap:20px;}
  .sem-stat-div{display:none;}
  .sem-hero-title{font-size:clamp(28px,7vw,40px);}
  .sem-tags-row{margin-top:-30px;padding:18px 14px;gap:10px;}
  .sem-tag{padding:9px 16px;font-size:13px;}
  .sem-adv-grid,.sem-plat-grid,.sem-data-grid{grid-template-columns:1fr;}
  .sem-flow-grid{grid-template-columns:1fr;}
  .sem-why-list{grid-template-columns:1fr;}
  .sem-cta-acts{flex-direction:column;align-items:center;}
  .sem-cta-contact{flex-direction:column;gap:12px;}
}
@media (max-width:480px){
  .sem-adv,.sem-plat{padding:30px 20px;}
  .sem-hero-btns{flex-direction:column;align-items:stretch;}
  .sem-hero-btns .sem-btn{justify-content:center;}
  .sem-ad-metrics b{font-size:17px;}
}
@media (min-width:1920px){
  .container{max-width:1700px;}
  .sem-hero-inner{gap:110px;}
  .sem-hero-title{font-size:64px;}
  .sem-title{font-size:50px;}
}