*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
:root{
--ink-900:#0B2545;
--ink-850:#0A2140;
--ink-800:#0D2A4E;
--ink-700:#123A63;
--ink-500:#1C4E7A;
--orange:#FF6B35;
--orange-soft:#FF8A5C;
--celadon:#3E8E7E;
--gold:#F2C14E;
--paper:#F5F1E8;
--mist:#9FB3C8;
--clay:#6E5A4E;
--line:rgba(159,179,200,.26);
--line-strong:rgba(159,179,200,.48);
--rail-w:72px;
--rail-w-open:240px;
--shell:1120px;
--shell-wide:1320px;
--radius-s:6px;
--radius-m:10px;
--radius-l:12px;
--gap:24px;
--ease:cubic-bezier(.2,.6,.2,1);
--font-sans:"Noto Sans SC","Source Han Sans SC","Source Han Sans CN","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
--font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
body{
min-height:100vh;
background-color:var(--ink-900);
background-image:
radial-gradient(1100px 520px at 84% -10%, rgba(28,78,122,.55), transparent 68%),
radial-gradient(760px 420px at 4% 106%, rgba(62,142,126,.16), transparent 70%);
background-repeat:no-repeat;
color:var(--paper);
font-family:var(--font-sans);
font-size:16px;
line-height:1.7;
-webkit-font-smoothing:antialiased;
text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-weight:900;line-height:1.15;letter-spacing:-.02em}
strong,b{font-weight:900}
::selection{background:var(--orange);color:#170B04}
:where(a,button,summary,[tabindex]):focus-visible{outline:2px solid var(--orange);outline-offset:2px}
#main-content{display:block;scroll-margin-top:150px}
#main-content:focus{outline:none}
/* ---------- 布局基座 ---------- */
.container{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:24px}
.container--wide{max-width:var(--shell-wide)}
@media (min-width:900px){
body{padding-left:var(--rail-w)}
}
@media (max-width:899px){
body{padding-bottom:76px}
}
/* ---------- 通用排版组件 ---------- */
.section{padding-block:clamp(44px,6.5vw,88px)}
.section--tight{padding-block:clamp(26px,3.5vw,46px)}
.section-head{display:grid;gap:12px;margin-bottom:clamp(24px,3vw,36px);max-width:920px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--mist)}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--orange);flex:0 0 auto}
.index-num{font-family:var(--font-mono);font-weight:700;font-size:clamp(38px,6vw,64px);line-height:.9;letter-spacing:-.04em;color:var(--orange)}
.section-title{font-size:clamp(24px,3vw,32px);line-height:1.2;letter-spacing:-.01em;color:var(--paper)}
.lede{font-size:17px;line-height:1.7;color:var(--mist);max-width:34em}
.divider{height:1px;border:0;background:var(--line);margin:0}
.u-visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.prose{max-width:36em;font-size:17px;line-height:1.7;color:rgba(245,241,232,.88)}
.prose p{margin:0 0 1.1em}
.prose h3{font-size:20px;margin:1.5em 0 .6em;color:var(--paper)}
.prose ul{list-style:disc;padding-left:1.25em;margin:0 0 1.1em}
.prose li{margin-bottom:.35em}
.prose a{color:var(--orange-soft);border-bottom:1px solid rgba(255,138,92,.45)}
/* ---------- 栅格 / Bento ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gap)}
.bento__cell{grid-column:span 12;min-width:0}
@media (min-width:720px){
.bento__cell--4{grid-column:span 4}
.bento__cell--6{grid-column:span 6}
.bento__cell--8{grid-column:span 8}
.bento__cell--12{grid-column:span 12}
}
/* ---------- 卡片 ---------- */
.card{
position:relative;display:flex;flex-direction:column;gap:10px;
padding:22px;background:var(--ink-700);color:var(--paper);
border:1px solid var(--line);border-radius:var(--radius-m);
transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
a.card{text-decoration:none}
.card:hover,a.card:hover{
border-color:var(--orange);
box-shadow:inset 0 0 0 1px var(--orange-soft),0 14px 34px rgba(0,0,0,.38);
}
.card--focus{
padding:clamp(24px,3vw,36px);
background:linear-gradient(155deg,var(--ink-700) 0%,var(--ink-800) 55%,#102F55 100%);
border-radius:var(--radius-l);
}
.card--focus::before{
content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:3px;
background:linear-gradient(180deg,var(--orange),rgba(255,107,53,0));
}
.card__meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--mist)}
.card__title{font-size:clamp(19px,2.2vw,22px);font-weight:900;letter-spacing:-.01em;color:var(--paper)}
.card__text{font-size:15px;line-height:1.68;color:rgba(245,241,232,.82)}
.card__helper{display:flex;align-items:center;gap:8px;margin-top:auto;padding-top:10px;font-size:12px;letter-spacing:.04em;color:var(--celadon)}
.card__helper::before{content:"";flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:var(--celadon)}
/* ---------- 按钮 ---------- */
.btn{
display:inline-flex;align-items:center;justify-content:center;gap:8px;
padding:12px 22px;border-radius:999px;border:1px solid transparent;
font-family:inherit;font-size:15px;font-weight:700;letter-spacing:.02em;
text-decoration:none;cursor:pointer;
transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.btn--primary{background:var(--orange);color:#170B04}
.btn--primary:hover{background:var(--orange-soft);box-shadow:0 0 0 3px rgba(255,107,53,.18)}
.btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--paper)}
.btn--ghost:hover{border-color:var(--orange);color:var(--orange-soft)}
.btn--celadon{background:var(--celadon);color:#04231D}
.btn--celadon:hover{background:#4AA394;box-shadow:0 0 0 3px rgba(62,142,126,.2)}
.btn--gold{background:var(--gold);color:#2A1F04}
.btn--gold:hover{background:#F7CE6B;box-shadow:0 0 0 3px rgba(242,193,78,.2)}
.btn:active{filter:brightness(.94)}
.btn--sm{padding:8px 15px;font-size:13px}
.btn--block{width:100%}
/* ---------- 标签 ---------- */
.tag{
display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
font-size:11px;letter-spacing:.12em;text-transform:uppercase;
color:var(--mist);background:rgba(28,78,122,.4);border:1px solid var(--line);
}
.tag--celadon{color:#93DACB;border-color:rgba(62,142,126,.6);background:rgba(62,142,126,.18)}
.tag--gold{color:var(--gold);border-color:rgba(242,193,78,.5);background:rgba(242,193,78,.12)}
.tag--orange{color:var(--orange-soft);border-color:rgba(255,107,53,.5);background:rgba(255,107,53,.12)}
/* ---------- 面包屑 ---------- */
.breadcrumb{padding-block:14px;font-size:12px;letter-spacing:.06em;color:var(--mist)}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__item:not(:last-child)::after{content:"/";color:rgba(159,179,200,.45)}
.breadcrumb__link{color:var(--mist);transition:color .16s var(--ease)}
.breadcrumb__link:hover{color:var(--orange-soft)}
.breadcrumb__current{color:var(--paper)}
/* ---------- 图片容器基础规则 ---------- */
.media{
position:relative;isolation:isolate;overflow:hidden;
aspect-ratio:16/9;border-radius:var(--radius-m);
background:linear-gradient(150deg,var(--ink-700),#0E2B4E);
border:1px solid var(--line);
}
.media img,.media__img{display:block;width:100%;height:100%;object-fit:cover;filter:saturate(.72) contrast(1.04)}
.media::after{
content:"";position:absolute;inset:0;pointer-events:none;
background:linear-gradient(180deg,rgba(11,37,69,.45) 0%,rgba(11,37,69,.82) 100%);
}
.media__label{
position:absolute;left:12px;bottom:12px;z-index:2;
padding:6px 10px;border-radius:4px;border:1px solid var(--line);border-left:3px solid var(--orange);
background:rgba(11,37,69,.8);color:var(--paper);
font-size:11px;letter-spacing:.12em;text-transform:uppercase;
}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
/* ---------- 数字锚点 ---------- */
.stat{display:grid;gap:6px}
.stat__num{font-family:var(--font-mono);font-weight:700;font-size:clamp(30px,4.4vw,44px);line-height:1;letter-spacing:-.03em;color:var(--paper)}
.stat__unit{font-size:.5em;color:var(--orange);margin-left:2px}
.stat__label{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--mist)}
/* ---------- 折叠面板 ---------- */
.disclosure{border:1px solid var(--line);border-radius:var(--radius-m);background:rgba(18,58,99,.55);overflow:hidden}
.disclosure + .disclosure{margin-top:12px}
.disclosure__button{
width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
padding:16px 18px;border-left:3px solid var(--celadon);
color:var(--paper);font-size:16px;font-weight:700;text-align:left;cursor:pointer;
transition:background-color .16s var(--ease);
}
.disclosure__button:hover{background:rgba(62,142,126,.12)}
.disclosure__icon{flex:0 0 auto;font-size:20px;line-height:1;color:var(--celadon);transition:transform .22s var(--ease)}
.disclosure[data-open="true"] .disclosure__icon{transform:rotate(45deg)}
.disclosure__panel{display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s var(--ease)}
.disclosure[data-open="true"] .disclosure__panel{grid-template-rows:1fr}
.disclosure__body{min-height:0;overflow:hidden;visibility:hidden;transition:visibility 0s linear .22s;color:rgba(245,241,232,.85);font-size:15px}
.disclosure[data-open="true"] .disclosure__body{visibility:visible;transition-delay:0s}
.disclosure__body > *{margin:0;padding:0 18px}
.disclosure__body > *:first-child{padding-top:2px}
.disclosure__body > *:last-child{padding-bottom:18px}
/* ---------- 文字链接 ---------- */
.link-arrow{
display:inline-flex;align-items:center;gap:8px;
font-size:14px;font-weight:700;color:var(--orange-soft);
border-bottom:1px solid transparent;
transition:gap .16s var(--ease),border-color .16s var(--ease),color .16s var(--ease);
}
.link-arrow::after{content:"→";transition:transform .16s var(--ease)}
.link-arrow:hover{gap:12px;border-color:var(--orange-soft);color:var(--orange)}
/* ================= 头部 ================= */
.skip-link{
position:absolute;left:12px;top:10px;z-index:200;
transform:translateY(-180%);
padding:10px 16px;border-radius:8px;
background:var(--orange);color:#170B04;font-size:14px;font-weight:700;
transition:transform .16s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0)}
@media (min-width:900px){.skip-link{left:calc(var(--rail-w) + 12px)}}
.site-header{
position:sticky;top:0;z-index:60;
background:
repeating-linear-gradient(90deg,rgba(28,78,122,.16) 0 1px,transparent 1px 72px),
linear-gradient(180deg,var(--ink-850) 0%,var(--ink-900) 100%);
border-bottom:1px solid var(--line);
}
/* 图标轨道 */
.icon-rail{
position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);z-index:80;
display:flex;flex-direction:column;gap:8px;padding:14px 10px 16px;
background:linear-gradient(180deg,#0A2140 0%,#071628 100%);
border-right:1px solid var(--line);
overflow:hidden;
transition:width .22s var(--ease),box-shadow .22s var(--ease);
}
.icon-rail:hover,.icon-rail:focus-within,.icon-rail[data-rail-open="true"]{
width:var(--rail-w-open);
box-shadow:16px 0 40px rgba(0,0,0,.45);
}
.rail__nav{display:flex;flex-direction:column;gap:6px;flex:0 0 auto}
.rail__link{
display:flex;align-items:center;gap:14px;
padding:11px 9px;border-radius:8px;border:1px solid transparent;
color:var(--mist);font-size:13px;letter-spacing:.04em;
transition:color .16s var(--ease),background-color .16s var(--ease),border-color .16s var(--ease);
}
.rail__link:hover{color:var(--paper);background:rgba(255,107,53,.14);border-color:rgba(255,107,53,.5)}
.rail__link[aria-current="page"]{color:var(--paper);background:rgba(255,107,53,.18);border-color:var(--orange)}
.rail__icon{flex:0 0 24px;display:grid;place-items:center;width:24px;height:24px}
.rail__icon svg{width:22px;height:22px;display:block;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s var(--ease)}
.rail__label{white-space:nowrap;opacity:0;transform:translateX(-6px);transition:opacity .18s var(--ease),transform .18s var(--ease)}
.icon-rail:hover .rail__label,
.icon-rail:focus-within .rail__label,
.icon-rail[data-rail-open="true"] .rail__label{opacity:1;transform:none}
.rail__toggle{
display:flex;align-items:center;gap:14px;margin-top:auto;
padding:11px 9px;border-radius:8px;border:1px dashed rgba(159,179,200,.3);
color:var(--mist);font-size:13px;cursor:pointer;
transition:color .16s var(--ease),border-color .16s var(--ease);
}
.rail__toggle:hover{color:var(--orange-soft);border-color:var(--orange)}
.icon-rail[data-rail-open="true"] .rail__toggle .rail__icon svg{transform:rotate(180deg)}
/* 刊头行 */
.header-top{
display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;
max-width:var(--shell-wide);margin-inline:auto;padding:14px 24px 10px;
}
.header-quick{display:flex;flex-wrap:wrap;gap:8px;justify-self:start}
.header-quick__link{
display:inline-flex;align-items:center;
padding:5px 12px;border-radius:999px;border:1px solid var(--line);
font-size:12px;letter-spacing:.08em;color:var(--mist);
transition:color .16s var(--ease),border-color .16s var(--ease),background-color .16s var(--ease);
}
.header-quick__link:hover{color:var(--paper);border-color:var(--orange);background:rgba(255,107,53,.12)}
.masthead{justify-self:center;text-align:center;text-decoration:none;color:var(--paper);display:block}
.masthead__brand-name{display:block;font-size:clamp(21px,2.6vw,32px);font-weight:900;letter-spacing:-.02em;line-height:1.05}
.masthead__brand-sub{display:block;margin-top:5px;font-size:11px;letter-spacing:.3em;color:var(--mist);text-transform:uppercase}
.masthead:hover .masthead__brand-sub{color:var(--orange-soft)}
.lang-switch{
justify-self:end;display:flex;align-items:center;gap:2px;padding:3px;
border:1px solid var(--line);border-radius:999px;background:rgba(18,58,99,.72);
}
.lang-switch__btn{
padding:5px 9px;border-radius:999px;cursor:pointer;
font-size:12px;letter-spacing:.06em;color:var(--mist);
transition:color .16s var(--ease),background-color .16s var(--ease);
}
.lang-switch__btn:hover{color:var(--paper);background:rgba(255,107,53,.16)}
.lang-switch__btn[aria-pressed="true"]{background:var(--orange);color:#170B04;font-weight:700}
/* 栏目行 */
.nav-band{
position:relative;display:flex;align-items:center;justify-content:center;gap:16px;
max-width:var(--shell-wide);margin-inline:auto;
padding:10px 24px 12px;border-top:1px solid rgba(159,179,200,.12);
}
.primary-nav__list{display:flex;flex-wrap:wrap;justify-content:center;gap:2px}
.primary-nav a{
position:relative;display:inline-block;
padding:8px 14px;font-size:15px;letter-spacing:.02em;color:var(--mist);
transition:color .16s var(--ease);
}
.primary-nav a::after{
content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
background:var(--orange);transform:scaleX(0);transform-origin:0 50%;
transition:transform .2s var(--ease);
}
.primary-nav a:hover{color:var(--paper)}
.primary-nav a:hover::after{transform:scaleX(1)}
.primary-nav a[aria-current="page"]{color:var(--paper);font-weight:700}
.primary-nav a[aria-current="page"]::after{transform:scaleX(1)}
.nav-band__cta{position:absolute;right:24px;top:50%;translate:0 -50%}
.nav-toggle{display:none;align-items:center;gap:10px;padding:10px 14px;border:1px solid var(--line-strong);border-radius:8px;color:var(--paper);cursor:pointer;font-size:14px}
.nav-toggle:hover{border-color:var(--orange)}
.nav-toggle__bars{display:grid;gap:4px;width:18px}
.nav-toggle__bars span{display:block;height:2px;background:currentColor;border-radius:2px}
.nav-toggle__text{letter-spacing:.1em}
.scroll-meter{height:2px;overflow:hidden;background:rgba(28,78,122,.55)}
.scroll-meter__bar{
display:block;width:100%;height:100%;
transform:scaleX(0);transform-origin:0 50%;
background:linear-gradient(90deg,var(--orange),var(--orange-soft));
transition:transform .1s linear;
}
@media (max-width:1023px){
.header-quick{display:none}
.header-top{grid-template-columns:1fr auto 1fr;padding:12px 20px 8px}
}
@media (max-width:899px){
.icon-rail{
position:fixed;top:auto;bottom:0;left:0;right:0;width:auto;height:72px;
flex-direction:row;align-items:center;gap:0;
padding:6px 8px;border-right:0;border-top:1px solid var(--line);
transition:none;overflow:visible;
}
.icon-rail:hover,.icon-rail:focus-within,.icon-rail[data-rail-open="true"]{width:auto;box-shadow:none}
.rail__nav{flex-direction:row;justify-content:space-around;width:100%}
.rail__link{flex:1 1 0;flex-direction:column;gap:4px;padding:6px 2px;border:0;font-size:11px;text-align:center}
.rail__label{opacity:1;transform:none;font-size:11px;letter-spacing:.02em}
.rail__toggle{display:none}
.nav-band{justify-content:flex-start;padding:8px 20px 10px}
.nav-toggle{display:inline-flex}
.nav-band__cta{display:none}
.primary-nav{
position:absolute;left:0;right:0;top:100%;display:none;
background:var(--ink-850);border-bottom:1px solid var(--line);
box-shadow:0 22px 44px rgba(0,0,0,.5);
}
.primary-nav[data-open="true"]{display:block}
.primary-nav__list{flex-direction:column;gap:0;padding:6px 20px 16px}
.primary-nav a{display:block;padding:14px 4px;border-bottom:1px solid rgba(159,179,200,.14);font-size:16px}
.primary-nav a::after{display:none}
.primary-nav a[aria-current="page"]{color:var(--orange-soft)}
}
/* ================= 页脚 ================= */
.site-footer{
margin-top:clamp(48px,7vw,96px);
border-top:1px solid var(--line);
background:
repeating-linear-gradient(90deg,rgba(28,78,122,.14) 0 1px,transparent 1px 80px),
linear-gradient(180deg,var(--ink-850) 0%,#061426 100%);
color:var(--mist);
font-size:14px;
}
.footer__inner{
display:grid;grid-template-columns:minmax(240px,1.05fr) 2fr;gap:clamp(28px,4vw,56px);
padding-block:clamp(36px,5vw,60px) 32px;
}
.footer__brand{display:grid;gap:12px;align-content:start;justify-items:start}
.footer__name{font-size:clamp(22px,2.6vw,28px);font-weight:900;letter-spacing:-.02em;color:var(--paper);line-height:1.1}
.footer__tag{font-size:11px;letter-spacing:.28em;text-transform:uppercase;color:var(--orange)}
.footer__note{font-size:13px;line-height:1.7;color:rgba(159,179,200,.86);max-width:32em}
.footer__cols{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.footer__col{min-width:0}
.footer__title{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--paper);margin-bottom:12px}
.footer__list{display:grid;gap:9px}
.footer__link{
display:inline-block;font-size:14px;color:var(--mist);
border-bottom:1px solid transparent;
transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer__link:hover{color:var(--paper);border-color:var(--orange)}
.footer__meta{font-size:12px;letter-spacing:.04em;color:rgba(159,179,200,.7)}
.footer__contact{
display:flex;flex-wrap:wrap;gap:10px 28px;
max-width:var(--shell-wide);margin-inline:auto;
padding:18px 24px;border-top:1px solid var(--line);
font-size:13px;color:var(--mist);
}
.footer__contact-item{display:inline-flex;align-items:center;gap:8px}
.footer__contact-item::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--clay);flex:0 0 auto}
.footer__legal{
display:flex;flex-wrap:wrap;gap:8px 22px;
padding-block:16px 30px;
font-size:12px;color:rgba(159,179,200,.68);
}
.footer__legal-item{display:inline-flex;align-items:center;gap:8px}
.footer__legal-item + .footer__legal-item::before{content:"·";color:rgba(159,179,200,.45)}
@media (max-width:899px){
.footer__inner{grid-template-columns:1fr;gap:32px}
.footer__cols{grid-template-columns:repeat(2,1fr);gap:22px}
.footer__contact{padding-inline:20px}
.footer__legal{padding-inline:20px}
}
@media (max-width:560px){
.header-top{padding:10px 16px 8px;gap:8px}
.masthead__brand-name{font-size:20px}
.masthead__brand-sub{font-size:10px;letter-spacing:.22em}
.lang-switch__btn{padding:4px 7px;font-size:11px}
.container{padding-inline:18px}
.footer__cols{grid-template-columns:1fr 1fr}
}
@media (prefers-reduced-motion:reduce){
html{scroll-behavior:auto}
*,*::before,*::after{
animation-duration:.001ms!important;
animation-iteration-count:1!important;
transition-duration:.001ms!important;
}
}