/* ============================================================
   光溯科技官网 · 版本 A（Greyparrot 风复刻）
   设计令牌取自 greyparrot.ai 实测 computed style：
   洋红 #D7004E / 深字 #171726 / 深底 #2E2E3C / 浅灰 #F3F3F4
   渐变 37deg #D7004E → #530072 49.64% → #490075 59.19%
   H1 56/68 w500 · H2 40/48 w500 · 按钮 16/24 r8 · 段落 padding 96px 0
   字体 Lexend（已本地化）
   ============================================================ */
:root{
  --pink:#D7004E;
  --pink-d:#B00040;
  --ink:#171726;
  --ink-2:#2E2E3C;
  --mist:#F3F3F4;
  --line:#E4E4E7;
  --tx-2:#5A5A6B;
  --tx-3:#6B6B7B;
  --grad:linear-gradient(37deg,#D7004E,#530072 49.64%,#490075 59.19%);
  --grad-soft:linear-gradient(37deg,#D7004E,#8E0A62 55%,#530072 100%);
  --r:8px;
  --wrap:1227px;
  --ff:'Lexend','PingFang SC','HarmonyOS Sans SC','Noto Sans SC',-apple-system,'Microsoft YaHei',sans-serif;
  --sh:0 24px 60px -28px rgba(23,23,38,.28);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--ff);background:#fff;color:var(--ink);
  -webkit-font-smoothing:antialiased;font-size:16px;line-height:1.6;overflow-x:hidden}
img{display:block;width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* ---------- 通用字 ---------- */
.h2{font-size:40px;line-height:48px;font-weight:500}
.h2.center{text-align:center}
.h2-inv{color:#fff}
.em{color:var(--pink)}
.sec-sub{font-size:17px;color:var(--tx-2);line-height:1.75;margin-top:16px;max-width:760px}
.sec-sub.center{text-align:center;margin-left:auto;margin-right:auto}
.k{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--pink);text-transform:uppercase;margin-bottom:14px}
.k-inv{color:#FF6B9E}

/* ---------- 按钮（照实测：pad 16/24 r8 f16 w500） ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:16px 24px;border-radius:var(--r);
  font-size:16px;font-weight:500;line-height:1;transition:.22s cubic-bezier(.2,.7,.3,1);white-space:nowrap}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 12px 28px -12px rgba(0,0,0,.5)}
.btn-line{border:1.5px solid rgba(255,255,255,.55);color:#fff}
.btn-line:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-pink{background:var(--pink);color:#fff}
.btn-pink:hover{background:var(--pink-d);transform:translateY(-2px)}
.btn-pink-solid{background:#fff;color:var(--pink)}
.btn-pink-solid:hover{transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(0,0,0,.5)}
.btn-ghost2{border:1.5px solid rgba(255,255,255,.6);color:#fff}
.btn-ghost2:hover{background:rgba(255,255,255,.14)}
.btn-full{width:100%;justify-content:center}
.link-btn{display:inline-block;margin-top:24px;font-size:16px;font-weight:500;
  border-bottom:1.5px solid currentColor;padding-bottom:3px;transition:.2s}
.link-btn:hover{color:var(--pink)}
.link-pink{display:inline-block;margin-top:20px;color:var(--pink);font-weight:600;font-size:16px}
.link-pink:hover{text-decoration:underline}

/* ---------- 公告条 ---------- */
.announce{background:var(--pink);color:#fff;display:flex;align-items:center;justify-content:center;
  gap:12px;padding:11px 44px 11px 18px;font-size:15px;position:relative;z-index:60}
.announce .an-ico{font-size:14px}
.announce p{font-weight:400}
.announce a{font-weight:600;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.announce a:hover{text-decoration:underline}
.announce .ar{transition:transform .25s}
.announce a:hover .ar{transform:translateX(4px)}
.announce .an-x{position:absolute;right:14px;top:50%;transform:translateY(-50%);
  font-size:22px;line-height:1;color:rgba(255,255,255,.8);padding:0 6px}
.announce .an-x:hover{color:#fff}
.announce.hide{display:none}

/* ---------- 导航 ---------- */
.nav{position:fixed;top:41px;left:0;right:0;z-index:50;transition:.3s}
.nav.on{background:rgba(23,23,38,.94);backdrop-filter:blur(12px);top:0;box-shadow:0 1px 0 rgba(255,255,255,.08)}
.nav-in{display:flex;align-items:center;gap:34px;height:76px}
.nav.on .nav-in{height:68px}
.logo{display:flex;align-items:center;gap:9px}
.logo-mark{width:26px;height:26px;display:block}
.logo-mark svg{width:100%;height:100%;fill:#fff}
.logo-tx{font-size:20px;font-weight:600;color:#fff;letter-spacing:.01em}
.logo-dark .logo-mark svg{fill:var(--pink)}
.logo-dark .logo-tx{color:var(--ink)}
.menu{display:flex;gap:30px;margin-left:auto}
.menu a{color:#fff;font-size:16px;font-weight:400;position:relative;padding:6px 0}
.menu a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:1.5px;
  background:var(--pink);transition:right .28s cubic-bezier(.2,.7,.3,1)}
.menu a:hover::after{right:0}
.burger{display:none;width:42px;height:38px;flex-direction:column;justify-content:center;
  align-items:center;gap:5px;margin-left:auto}
.burger span{width:18px;height:1.6px;background:#fff;display:block;transition:.25s}

/* ---------- HERO ---------- */
.hero{position:relative;min-height:720px;padding:148px 0 120px;overflow:hidden;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 64px),0 100%)}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;animation:kenburns 22s ease-in-out infinite alternate}
.hero-veil{position:absolute;inset:0;z-index:1;
  background:linear-gradient(0deg,rgba(0,0,0,.6),rgba(0,0,0,.6))}
.hero-in{position:relative;z-index:2;padding-top:24px}
.play{display:inline-block;color:var(--pink);font-size:20px;line-height:1;margin-bottom:22px;
  animation:eco-pulse 3.4s ease-in-out infinite}
.hero h1{font-size:56px;line-height:68px;font-weight:500;color:#fff;max-width:900px}
.hero-sub{color:rgba(255,255,255,.82);font-size:17px;line-height:1.75;margin-top:26px;max-width:620px}
.hero-btn{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap}
.hero-tags{display:flex;gap:10px;list-style:none;margin-top:30px;flex-wrap:wrap}
.hero-tags li{font-size:13.5px;color:rgba(255,255,255,.86);
  border:1px solid rgba(255,255,255,.28);padding:7px 14px;border-radius:99px}

/* ---------- 服务行业 ---------- */
.adopted{padding:72px 0;background:#fff}
.ad-cap{text-align:center;font-size:14px;color:var(--tx-3);margin-bottom:22px}
.ad-row{display:flex;flex-wrap:wrap;justify-content:center;gap:14px 40px}
.ad-row span{font-size:20px;font-weight:400;color:var(--tx-3);letter-spacing:.02em;
  transition:.25s;filter:grayscale(1)}
.ad-row span:hover{color:var(--pink);filter:none;transform:translateY(-2px)}

/* ---------- 双栏 ---------- */
.two{padding:96px 0 96px}
.two-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-top:56px}
.side{border-radius:14px;padding:40px 38px 38px;display:flex;flex-direction:column;transition:.3s}
.side-pink{background:var(--grad-soft);color:#fff}
.side-pink .k{color:rgba(255,255,255,.75)}
.side-pink .side-body{color:rgba(255,255,255,.86)}
.side-line{background:#fff;border:1px solid var(--line)}
.side-line .side-body{color:var(--tx-2)}
.side h3{font-size:28px;line-height:1.32;font-weight:600;margin:6px 0 18px}
.side-body{font-size:16px;line-height:1.75}
.ticks{list-style:none;margin-top:24px;display:grid;gap:12px}
.ticks li{font-size:15.5px;line-height:1.6;padding-left:26px;position:relative}
.ticks li::before{content:"✓";position:absolute;left:0;top:0;font-weight:700}
.side-pink .ticks li::before{color:#fff}
.side-line .ticks li::before{color:var(--pink)}
.ticks b{font-weight:600}
.side:hover{transform:translateY(-4px);box-shadow:var(--sh)}

/* ---------- 深色数据带 ---------- */
.band{position:relative;padding:96px 0;background:var(--ink-2);overflow:hidden}
.band-bg{position:absolute;inset:0;opacity:.32}
.band-bg img{width:100%;height:100%;object-fit:cover}
.band-in{position:relative;z-index:2;color:#fff}
.band-sub{color:rgba(255,255,255,.7);font-size:16px;margin-top:18px;max-width:620px}
.nums{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:56px}
.num b{display:block;font-size:60px;line-height:1.1;font-weight:500;color:var(--pink);
  letter-spacing:-.01em;font-variant-numeric:tabular-nums}
.num span{display:block;margin-top:10px;font-size:15px;color:rgba(255,255,255,.72);line-height:1.5}

/* ---------- 三件事 ---------- */
.tools{padding:96px 0}
.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-top:56px}
.tool-hd{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:20px}
.tool-logo{display:flex;align-items:center;gap:8px;font-size:18px;font-weight:600}
.tool-logo svg{width:16px;height:16px;fill:var(--pink)}
.tool-ar{color:var(--pink);font-size:18px;transition:transform .25s}
.tool:hover .tool-ar{transform:translateX(6px)}
.tool-tx{font-size:16px;color:var(--tx-2);line-height:1.75;min-height:96px}
.tool-shot{position:relative;border-radius:10px;overflow:hidden;margin-top:22px;background:#111;
  box-shadow:var(--sh)}
.tool-shot img{height:230px;object-fit:cover;opacity:.92;transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.tool:hover .tool-shot img{transform:scale(1.05)}
.shot-bar{position:absolute;left:0;right:0;top:0;display:flex;align-items:center;gap:8px;
  padding:11px 14px;background:rgba(17,17,26,.82);color:#fff;font-size:12px;letter-spacing:.06em}
.shot-bar i{width:8px;height:8px;border-radius:50%;background:var(--pink);display:block;
  animation:eco-pulse 2.4s ease-in-out infinite}

/* ---------- 阶段交付 ---------- */
.portal{padding:96px 0;background:var(--mist)}
.portal-grid{display:grid;grid-template-columns:minmax(0,640px);gap:64px;align-items:center;justify-content:center;margin-top:56px}
.portal-shot{position:relative}
.mock{background:#fff;border-radius:12px;overflow:hidden;box-shadow:var(--sh)}
.mock-bar{display:flex;align-items:center;gap:7px;padding:13px 16px;background:var(--ink);
  color:rgba(255,255,255,.7);font-size:12px}
.mock-bar i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.22);display:block}
.mock-bar span{margin-left:10px;letter-spacing:.04em}
.mock-body{padding:8px 20px 20px}
.mrow{display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 0;border-bottom:1px solid var(--line);font-size:15px}
.mrow:last-child{border-bottom:0}
.mrow span{color:var(--tx-3)}
.mrow b{font-weight:600;color:var(--ink)}
.mock-badge{position:absolute;right:-14px;bottom:-16px;background:var(--pink);color:#fff;
  font-size:14px;font-weight:600;padding:12px 18px;border-radius:var(--r);
  box-shadow:0 16px 34px -16px rgba(215,0,78,.7)}

/* ---------- 客户案例轮播 ---------- */
.stories{padding:96px 0;background:#fff}
/* 客户案例标题区居中：原先左对齐+下方通栏轮播，标题右侧留一大片空、视觉偏左 */
.stories .wrap{text-align:center}
.stories .sec-sub{margin-left:auto;margin-right:auto}

/* ===== 全站模块标题统一居中（B 选项：与已居中的 two / tools / stories 对齐） ===== */
/* band：深色数据带标题（含下方数据，数据本身居中无伤） */
.band-in{text-align:center}
.band-sub{margin-left:auto;margin-right:auto}
/* press：服务承诺标题 + CTA 按钮（仅标题区，不波及下方卡片栅格） */
.press .h2{text-align:center;margin-left:auto;margin-right:auto}
.press .press-btn{display:block;width:fit-content;margin:26px auto 0}
/* cta：标题与副文案（按钮/标签本身已居中） */
.cta-in{text-align:center}
/* portal / vision：标题区抽出 2 栏栅格、整页居中（B 方案）。portal 副文案与按钮随标题置顶，mock 图单独居中；vision 两段正文留左栏与环形图并排（长段落左对齐保可读性） */
.portal-head,.vision-head{text-align:center}
.portal-head .sec-sub{margin-left:auto;margin-right:auto}
.portal-head .btn{margin-top:32px}
.vision-grid{margin-top:48px}
/* 客户案例：横向 carousel —— 三个案例同时完整可见（桌面 3 张等宽并排，无半张残骸）。
   卡片改竖排（图上/文字下），窄屏时整卡宽变小并可横向滑动，scroll-snap 保证停在对齐位。
   控件布局 = 「← 圆点 →」：左箭头靠左、圆点钉在正中、右箭头靠右（圆点指示正在看第几张）。 */
.slider{margin-top:56px}
.sld-track{display:grid;grid-auto-flow:column;
  grid-auto-columns:calc((100% - 48px) / 3);gap:24px;
  overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none}
.sld-track::-webkit-scrollbar{display:none}
.story{scroll-snap-align:start;display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:box-shadow .3s,transform .3s,border-color .3s}
.story:hover{box-shadow:var(--sh);transform:translateY(-4px)}
/* 正在看的卡（圆点指示的那张）：洋红描边 */
.story.on{border-color:var(--pink);box-shadow:0 18px 40px -22px rgba(215,0,78,.45)}
.story-img{background:#111}
.story-img img{width:100%;height:196px;object-fit:cover;display:block}
.story-tx{padding:22px 24px 24px;flex:1;display:flex;flex-direction:column}
.story-co{font-size:12px;color:var(--tx-3);letter-spacing:.05em;margin-bottom:10px}
.story-res{font-size:19px;line-height:1.42;font-weight:500}
.story-res span{color:var(--pink);font-weight:600}
.story blockquote{margin-top:12px;font-size:14.5px;line-height:1.7;color:var(--tx-2);
  font-style:italic;border-left:3px solid var(--line);padding-left:14px}
.story-meta{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:13.5px}
.story-meta .av{width:30px;height:30px;border-radius:50%;background:var(--mist);color:var(--ink);
  display:grid;place-items:center;font-size:12px;font-weight:600}
.story-meta b{font-weight:600}
.story-meta i{font-style:normal;color:var(--tx-3)}
/* 「看这个案例」链接沉底，三张卡等高时底部对齐 */
.story-tx .link-pink{margin-top:auto;padding-top:16px}
/* 控件：左箭头 · 圆点 · 右箭头（display:contents 让两个箭头直接当 grid item 用）
   桌面端三张卡全部可见、轨道不需要滚动 → 隐藏箭头，只留圆点指示（避免点了没反应的"死按钮"）
   箭头与卡片左右边缘严格对齐（负 margin 让 42px 圆钮的视觉边 = 卡片边） */
.sld-ctl{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;margin-top:28px}
.arrows{display:contents}
.arrows button{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);
  color:var(--ink);font-size:16px;transition:.22s;display:grid;place-items:center;
  background:#fff;cursor:pointer}
.arrows button:hover{background:var(--pink);border-color:var(--pink);color:#fff}
#prev{grid-column:1;justify-self:start;margin-left:-1px}
#next{grid-column:3;justify-self:end;margin-right:-1px}
.dots{grid-column:2;display:flex;gap:9px}
.dots button{width:9px;height:9px;border-radius:50%;background:var(--line);border:none;padding:0;transition:.25s;cursor:pointer}
.dots button.on{background:var(--pink);transform:scale(1.15)}
/* 桌面宽屏：三卡全见 → 箭头无用，隐藏 */
@media (min-width:1101px){
  .arrows{display:none}
  .sld-ctl{grid-template-columns:1fr;margin-top:24px}
  .dots{grid-column:1;justify-content:center}
}

/* ---------- 环形图 ---------- */
.vision{padding:96px 0}
.vision-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.ring{width:100%;max-width:500px;margin:0 auto;display:block}
/* 弧段：底层淡线 + 上层流动光点（照 eco-flow 的 stroke-dashoffset 思路） */
.ring-arc{fill:none;stroke:rgba(215,0,78,.22);stroke-width:1.6}
.ring-flow{fill:none;stroke:var(--pink);stroke-width:2.4;stroke-linecap:round;
  stroke-dasharray:16 102;animation:flow-run 2.8s linear infinite}
.ring-flow.d2{animation-delay:-.56s}
.ring-flow.d3{animation-delay:-1.12s}
.ring-flow.d4{animation-delay:-1.68s}
.ring-flow.d5{animation-delay:-2.24s}
.ring-nodes circle{fill:#fff;stroke:var(--pink);stroke-width:1.6;transition:.3s}
.ring-nodes text{fill:var(--ink);font-size:13px;font-weight:500;font-family:var(--ff)}
.ring-nodes circle:hover{fill:var(--pink)}
.ring-core{fill:url(#gcore)}
.ring-core-tx{fill:#fff;font-size:19px;font-weight:600;text-anchor:middle;font-family:var(--ff)}
.ring-core-sub{fill:rgba(255,255,255,.82);font-size:11.5px;text-anchor:middle;
  letter-spacing:.08em;font-family:var(--ff)}
.ring-core-fill{fill:var(--grad-soft)}

/* ---------- 服务承诺 ---------- */
.press{padding:96px 0;position:relative;
  background-image:repeating-linear-gradient(115deg,transparent 0 42px,rgba(215,0,78,.045) 42px 84px)}
.press .h2{max-width:760px}
.press-btn{margin-top:26px}
.press-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:56px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:14px;padding:34px 30px;
  transition:.3s}
.pcard:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:rgba(215,0,78,.35)}
.pico{width:40px;height:40px;border-radius:50%;background:var(--pink);color:#fff;
  display:grid;place-items:center;font-weight:700;margin-bottom:20px}
.pcard h3{font-size:20px;font-weight:600;margin-bottom:12px}
.pcard p{font-size:15.5px;color:var(--tx-2);line-height:1.75}
/* 次级小标题「我们不做的事」与上方居中 h2 保持一致，否则同区块内一居中一左对齐、看着别扭 */
.notdo-h{font-size:20px;font-weight:600;margin:56px 0 22px;text-align:center}
.notdo{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.notdo span{background:#fff;border:1px solid var(--line);border-left:3px solid var(--pink);
  border-radius:0 10px 10px 0;padding:20px 22px;font-size:16px;font-weight:600;line-height:1.5}

/* ---------- CTA ---------- */
.cta{position:relative;background:var(--grad);padding:120px 0;text-align:center;
  color:#fff;overflow:hidden}
.cta-stripes{position:absolute;inset:-30% -10%;
  background:repeating-linear-gradient(58deg,rgba(255,255,255,.07) 0 2px,transparent 2px 46px);
  animation:stripe-move 24s linear infinite;pointer-events:none}
.cta-in{position:relative;z-index:2}
.cta-h{font-size:44px;line-height:1.28;font-weight:500}
.cta-h .u{text-decoration:underline;text-decoration-thickness:4px;text-underline-offset:8px;
  text-decoration-color:rgba(255,255,255,.5)}
.cta-sub{margin-top:22px;font-size:17px;color:rgba(255,255,255,.86);line-height:1.75}
.cta-btn{display:flex;gap:14px;justify-content:center;margin-top:38px;flex-wrap:wrap}
.cta-tags{display:flex;gap:12px;justify-content:center;list-style:none;margin-top:34px;flex-wrap:wrap}
.cta-tags li{font-size:13.5px;color:rgba(255,255,255,.88);
  border:1px solid rgba(255,255,255,.35);padding:7px 16px;border-radius:99px}

/* ---------- Footer ---------- */
.foot{background:#fff;padding:88px 0 26px}
.foot-grid{display:grid;grid-template-columns:1.25fr .8fr .8fr .85fr 1.5fr;gap:36px}
.foot-addr{font-size:14.5px;color:var(--tx-2);line-height:1.9;margin-top:20px}
.foot-addr i{font-style:normal;font-size:12px;letter-spacing:.06em;color:var(--tx-3)}
.foot-soc{display:flex;gap:16px;margin-top:22px}
.foot-soc a{font-size:14px;color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:2px}
.foot-soc a:hover{color:var(--pink);border-color:var(--pink)}
.foot-qr{width:104px;margin-top:24px;border:1px solid var(--line);border-radius:8px;padding:6px}
.foot-col h4{font-size:15px;font-weight:600;margin-bottom:18px}
.foot-col a{display:block;font-size:14.5px;color:var(--tx-2);margin-bottom:12px;transition:.2s}
.foot-col a:hover{color:var(--pink)}
.foot-form h4{font-size:15px;font-weight:600;margin-bottom:18px}
.foot-form form{display:grid;gap:12px}
.ff2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.foot-form input{width:100%;border:1px solid var(--line);border-radius:var(--r);
  padding:13px 15px;font-size:15px;font-family:inherit;outline:none;transition:.2s;background:#fff}
.foot-form input::placeholder{color:var(--tx-3)}
.foot-form input:focus{border-color:var(--pink);box-shadow:0 0 0 3px rgba(215,0,78,.1)}
.foot-tip{font-size:12.5px;color:var(--tx-3);margin-top:12px;line-height:1.6}
/* 留资表单提交状态提示 */
.form-msg{font-size:13px;line-height:1.6;margin:0}
.form-msg:empty{display:none}
.form-msg.is-ok{color:#0a7d3f;font-weight:600}
.form-msg.is-err{color:var(--pink);font-weight:600}
.foot-copy{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:64px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--tx-3)}
.foot-links{display:flex;gap:22px}
.foot-links a:hover{color:var(--pink)}

/* ---------- 入场动画（关键帧照抄 Greyparrot 实测） ---------- */
@keyframes fadeInUp{0%{opacity:0;transform:translateY(30%)}100%{opacity:1;transform:translateY(0)}}
@keyframes fadeInLeft{0%{opacity:0;transform:translateX(10%)}100%{opacity:1;transform:translateX(0)}}
@keyframes fadeInRight{0%{opacity:0;transform:translateX(-10%)}100%{opacity:1;transform:translateX(0)}}
@keyframes fadeInDown{0%{opacity:0;transform:translateY(-30%)}100%{opacity:1;transform:translateY(0)}}
@keyframes eco-flow{100%{stroke-dashoffset:-16}}
@keyframes flow-run{to{stroke-dashoffset:-118}}
@keyframes eco-pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.035)}}
@keyframes kenburns{0%{transform:scale(1) translate(0,0)}100%{transform:scale(1.09) translate(-1.5%,-1.2%)}}
@keyframes stripe-move{0%{transform:translateX(0)}100%{transform:translateX(46px)}}

[data-reveal]{opacity:0}
[data-reveal].in{animation:fadeInUp .8s cubic-bezier(.2,.7,.3,1) forwards}
[data-reveal="left"].in{animation-name:fadeInLeft}
[data-reveal="right"].in{animation-name:fadeInRight}
[data-reveal="down"].in{animation-name:fadeInDown}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .menu{display:none}
  .burger{display:flex}
  .nav-in>a.btn{display:none}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot-form{grid-column:1/-1}
  .two-grid,.portal-grid,.vision-grid{grid-template-columns:1fr;gap:40px}
  .tool-grid,.press-grid{grid-template-columns:1fr 1fr}
  .nums{grid-template-columns:1fr 1fr;gap:36px 20px}
  .notdo{grid-template-columns:1fr 1fr}
  .hero h1{font-size:44px;line-height:54px}
  .cta-h{font-size:34px}
  .story{max-width:820px}
  /* 窄屏放不下三张：卡宽降到视口的 84%，横向滑动看其余案例（scroll-snap 整卡对齐，不露半张） */
  .sld-track{grid-auto-columns:84%;gap:16px}
  .sld-ctl{margin-top:22px}
}
@media (max-width:680px){
  .announce{font-size:13px;padding:10px 40px 10px 14px}
  .announce p{display:none}
  .hero{min-height:640px;padding:120px 0 96px;clip-path:polygon(0 0,100% 0,100% calc(100% - 34px),0 100%)}
  .hero h1{font-size:32px;line-height:42px}
  .hero-sub{font-size:15.5px}
  .h2{font-size:28px;line-height:36px}
  .cta-h{font-size:27px}
  .tool-grid,.press-grid,.notdo,.foot-grid{grid-template-columns:1fr}
  .nums{grid-template-columns:1fr 1fr}
  .num b{font-size:32px;line-height:40px}
  .story-img img{height:180px}
  .story-res{font-size:18px}
  .sld-track{grid-auto-columns:88%;gap:14px}
  .slider{padding:0}
  .side{padding:30px 26px}
  .side h3{font-size:23px}
  .slider{padding:0 20px}
  .press,.vision,.tools,.portal,.stories,.two{padding:64px 0}
  .cta{padding:80px 0}
  .ring{max-width:340px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  [data-reveal]{opacity:1}
}